{"title":"Shimano Ultegra","description":"\u003cp\u003eShimano Ultegra R8100 12-speed Di2: shift levers, derailleurs, cranksets and power meters, cassettes and chains.\u003c\/p\u003e","products":[{"product_id":"shimano-ultegra-fc-r8100-crankset","title":"Shimano Ultegra FC-R8100 Crankset","description":"\u003cstyle\u003e\n.oc{--line:#e6e6e2;--soft:#f7f7f5;--muted:#5f6368;--radius:18px;--shadow:0 10px 28px rgba(0,0,0,.07);font-family:Inter,system-ui,-apple-system,\"Segoe UI\",sans-serif;color:#111;line-height:1.55}\n.oc *{box-sizing:border-box}\n.oc h1,.oc h2,.oc h3{letter-spacing:-.035em;line-height:1.05;margin:0 0 1rem}\n.oc h1{font-size:clamp(2.4rem,7vw,5.5rem)}\n.oc h2{font-size:clamp(1.7rem,3.5vw,3rem)}\n.oc h3{font-size:clamp(1.2rem,1.8vw,1.6rem)}\n.oc .eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;color:#777;margin:0 0 .8rem}\n.oc .hero{text-align:center;padding:clamp(2.5rem,6vw,5rem) clamp(1rem,4vw,3rem);background:linear-gradient(180deg,#fff 0%,#f8f8f5 100%)}\n.oc .hero .lede{max-width:820px;margin:0 auto;font-size:clamp(1.05rem,1.8vw,1.4rem);color:var(--muted)}\n.oc .section{padding:clamp(2rem,5vw,4.5rem) clamp(1rem,4vw,3rem)}\n.oc .soft{background:var(--soft)}\n.oc .intro{max-width:820px;margin:0 auto 2rem;text-align:center}\n.oc .intro p{color:var(--muted);font-size:clamp(1rem,1.5vw,1.2rem)}\n.oc .grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(240px,1fr));max-width:1300px;margin:0 auto}\n.oc .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}\n.oc .card .body{padding:1.2rem 1.4rem}\n.oc .card .body p{margin:.4rem 0 0;color:var(--muted)}\n.oc .stat{padding:1.6rem 1.4rem;display:flex;flex-direction:column;justify-content:flex-end;min-height:150px}\n.oc .stat strong{font-size:clamp(1.6rem,3.2vw,2.6rem);line-height:1;letter-spacing:-.04em}\n.oc .stat span{color:var(--muted);margin-top:.5rem;font-size:.95rem}\n.oc .spec-grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(300px,1fr));max-width:1300px;margin:0 auto}\n.oc .spec-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.2rem 1.5rem}\n.oc .spec-row{display:grid;grid-template-columns:130px 1fr;gap:1rem;padding:.8rem 0;border-top:1px solid var(--line)}\n.oc .spec-row:first-of-type{border-top:0}\n.oc .spec-row dt{font-weight:800;margin:0}\n.oc .spec-row dd{margin:0;color:#666}\n.oc dl{margin:0}\n@media(max-width:620px){.oc .spec-row{grid-template-columns:1fr;gap:.2rem}}\n\u003c\/style\u003e\u003cdiv class=\"oc\"\u003e\n\u003cheader class=\"hero\"\u003e\u003cp class=\"eyebrow\"\u003eUltegra 12-speed crankset\u003c\/p\u003e\n\u003ch1\u003eShimano Ultegra FC-R8100 Crankset\u003c\/h1\u003e\n\u003cp class=\"lede\"\u003eUltegra's 2x12 crankset brings Dura-Ace style hollow construction to a more approachable price, with a stiff hollow outer ring and forged hollow arms. A sensible upgrade or replacement for any R8100 build.\u003c\/p\u003e\u003c\/header\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"grid\"\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e~700g\u003c\/strong\u003e\u003cspan\u003eApprox. weight (170mm, 50-34T)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e148mm\u003c\/strong\u003e\u003cspan\u003eQ-factor\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e44.5mm\u003c\/strong\u003e\u003cspan\u003eChainline\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e3\u003c\/strong\u003e\u003cspan\u003eChainring options\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eHighlights\u003c\/p\u003e\n\u003ch2\u003eWhy we rate it\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid\"\u003e\n\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eHollowGlide outer ring\u003c\/h3\u003e\n\u003cp\u003eA hollow-section big ring resists flex under load, keeping front shifts quick and positive even when you shift mid-effort.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eHollow forged arms\u003c\/h3\u003e\n\u003cp\u003eCold-forged Hollowtech II arms keep weight down while delivering the stiffness you would expect from Shimano's second-tier group.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eChoice of gearing\u003c\/h3\u003e\n\u003cp\u003ePick 52-36T for fast group rides, 50-34T for general use or 46-36T for steep climbs and rougher roads.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eShort lengths available\u003c\/h3\u003e\n\u003cp\u003eArm lengths start at 160mm, which helps smaller riders and anyone running a more aggressive position.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eShared standards\u003c\/h3\u003e\n\u003cp\u003eUses the same 24mm Hollowtech II axle and 110mm asymmetric BCD as Dura-Ace, so bottom brackets and many spares are interchangeable.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eTech specs\u003c\/p\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cp\u003eManufacturer specification. Details may change without notice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-grid\"\u003e\u003carticle class=\"spec-card\"\u003e\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eModel code\u003c\/dt\u003e\n\u003cdd\u003eFC-R8100\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSeries\u003c\/dt\u003e\n\u003cdd\u003eUltegra R8100\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSpeeds\u003c\/dt\u003e\n\u003cdd\u003e2x12\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eChainrings\u003c\/dt\u003e\n\u003cdd\u003e50-34T, 52-36T, 46-36T\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eCrank lengths\u003c\/dt\u003e\n\u003cdd\u003e160, 165, 170, 172.5, 175mm\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eBCD\u003c\/dt\u003e\n\u003cdd\u003e110mm asymmetric 4-arm\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eQ-factor\u003c\/dt\u003e\n\u003cdd\u003e148mm\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eChainline\u003c\/dt\u003e\n\u003cdd\u003e44.5mm\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eAxle\u003c\/dt\u003e\n\u003cdd\u003e24mm Hollowtech II\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003eApprox. 700g (170mm, 50-34T)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eBottom bracket\u003c\/dt\u003e\n\u003cdd\u003eHollowtech II, e.g. BB-R9100, SM-BB92-41B or SM-BB72-41B (sold separately)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003e46-36T compatibility\u003c\/dt\u003e\n\u003cdd\u003eRequires FD-R8150 or FD-R9250 front derailleur\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\u003c\/article\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eOrdering\u003c\/p\u003e\n\u003ch2\u003eAvailable from The Cycle Collective\u003c\/h2\u003e\n\u003cp\u003eAvailable to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"160mm \/ 50-34T","offer_id":57355824005498,"sku":"FCR8100M04","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"165mm \/ 50-34T","offer_id":57355824038266,"sku":"FCR8100A04","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"170mm \/ 50-34T","offer_id":57355824071034,"sku":"FCR8100C04","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"172.5mm \/ 50-34T","offer_id":57355824103802,"sku":"FCR8100D04","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"175mm \/ 50-34T","offer_id":57355824136570,"sku":"FCR8100E04","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"160mm \/ 52-36T","offer_id":57355824169338,"sku":"FCR8100M26","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"165mm \/ 52-36T","offer_id":57355824202106,"sku":"FCR8100A26","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"170mm \/ 52-36T","offer_id":57355824234874,"sku":"FCR8100C26","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"172.5mm \/ 52-36T","offer_id":57355824267642,"sku":"FCR8100D26","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"175mm \/ 52-36T","offer_id":57355824300410,"sku":"FCR8100E26","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"160mm \/ 46-36T","offer_id":57355824333178,"sku":"IFCR8100MX66","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"165mm \/ 46-36T","offer_id":57355824365946,"sku":"IFCR8100AX66","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"170mm \/ 46-36T","offer_id":57355824398714,"sku":"IFCR8100CX66","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"172.5mm \/ 46-36T","offer_id":57355824431482,"sku":"IFCR8100DX66","price":299.99,"currency_code":"GBP","in_stock":false},{"title":"175mm \/ 46-36T","offer_id":57355824464250,"sku":"IFCR8100EX66","price":299.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0487\/4007\/3623\/files\/CK0647.jpg?v=1791319153"},{"product_id":"shimano-ultegra-fc-r8100-p-power-meter-crankset","title":"Shimano Ultegra FC-R8100-P Power Meter Crankset","description":"\u003cstyle\u003e\n.oc{--line:#e6e6e2;--soft:#f7f7f5;--muted:#5f6368;--radius:18px;--shadow:0 10px 28px rgba(0,0,0,.07);font-family:Inter,system-ui,-apple-system,\"Segoe UI\",sans-serif;color:#111;line-height:1.55}\n.oc *{box-sizing:border-box}\n.oc h1,.oc h2,.oc h3{letter-spacing:-.035em;line-height:1.05;margin:0 0 1rem}\n.oc h1{font-size:clamp(2.4rem,7vw,5.5rem)}\n.oc h2{font-size:clamp(1.7rem,3.5vw,3rem)}\n.oc h3{font-size:clamp(1.2rem,1.8vw,1.6rem)}\n.oc .eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;color:#777;margin:0 0 .8rem}\n.oc .hero{text-align:center;padding:clamp(2.5rem,6vw,5rem) clamp(1rem,4vw,3rem);background:linear-gradient(180deg,#fff 0%,#f8f8f5 100%)}\n.oc .hero .lede{max-width:820px;margin:0 auto;font-size:clamp(1.05rem,1.8vw,1.4rem);color:var(--muted)}\n.oc .section{padding:clamp(2rem,5vw,4.5rem) clamp(1rem,4vw,3rem)}\n.oc .soft{background:var(--soft)}\n.oc .intro{max-width:820px;margin:0 auto 2rem;text-align:center}\n.oc .intro p{color:var(--muted);font-size:clamp(1rem,1.5vw,1.2rem)}\n.oc .grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(240px,1fr));max-width:1300px;margin:0 auto}\n.oc .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}\n.oc .card .body{padding:1.2rem 1.4rem}\n.oc .card .body p{margin:.4rem 0 0;color:var(--muted)}\n.oc .stat{padding:1.6rem 1.4rem;display:flex;flex-direction:column;justify-content:flex-end;min-height:150px}\n.oc .stat strong{font-size:clamp(1.6rem,3.2vw,2.6rem);line-height:1;letter-spacing:-.04em}\n.oc .stat span{color:var(--muted);margin-top:.5rem;font-size:.95rem}\n.oc .spec-grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(300px,1fr));max-width:1300px;margin:0 auto}\n.oc .spec-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.2rem 1.5rem}\n.oc .spec-row{display:grid;grid-template-columns:130px 1fr;gap:1rem;padding:.8rem 0;border-top:1px solid var(--line)}\n.oc .spec-row:first-of-type{border-top:0}\n.oc .spec-row dt{font-weight:800;margin:0}\n.oc .spec-row dd{margin:0;color:#666}\n.oc dl{margin:0}\n@media(max-width:620px){.oc .spec-row{grid-template-columns:1fr;gap:.2rem}}\n\u003c\/style\u003e\u003cdiv class=\"oc\"\u003e\n\u003cheader class=\"hero\"\u003e\u003cp class=\"eyebrow\"\u003eUltegra dual-sided power meter\u003c\/p\u003e\n\u003ch1\u003eShimano Ultegra FC-R8100-P Power Meter Crankset\u003c\/h1\u003e\n\u003cp class=\"lede\"\u003eShimano's Ultegra crankset with dual-sided power measurement built in, so left and right leg output is recorded without any add-on pods. A strong-value route to proper power training on an R8100 bike.\u003c\/p\u003e\u003c\/header\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"grid\"\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e±2%\u003c\/strong\u003e\u003cspan\u003eClaimed accuracy\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e300h\u003c\/strong\u003e\u003cspan\u003eBattery life\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e758g\u003c\/strong\u003e\u003cspan\u003eWeight (50-34T)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003eL-R\u003c\/strong\u003e\u003cspan\u003eDual-sided measurement\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eHighlights\u003c\/p\u003e\n\u003ch2\u003eWhy we rate it\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid\"\u003e\n\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eMeasures both legs\u003c\/h3\u003e\n\u003cp\u003eStrain gauges in each arm record left and right power separately, giving balance data you can actually trust.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eUp to 300 hours per charge\u003c\/h3\u003e\n\u003cp\u003eThe integrated battery is rated for around 300 hours of riding and charges through Shimano's EW-EC300 cable.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eWorks with your devices\u003c\/h3\u003e\n\u003cp\u003eBroadcasts over Bluetooth LE and ANT+ for head units, apps and training platforms, with wireless firmware updates.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eEasy calibration\u003c\/h3\u003e\n\u003cp\u003eA switch on the transmitter handles zero offset, and active temperature compensation keeps readings steady as conditions change.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eUltegra chassis\u003c\/h3\u003e\n\u003cp\u003eIt shares the hollow forged arms and HollowGlide outer ring of the standard Ultegra crank, so shifting and stiffness are unchanged.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eTech specs\u003c\/p\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cp\u003eManufacturer specification. Details may change without notice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-grid\"\u003e\u003carticle class=\"spec-card\"\u003e\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eModel code\u003c\/dt\u003e\n\u003cdd\u003eFC-R8100-P\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSeries\u003c\/dt\u003e\n\u003cdd\u003eUltegra R8100\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSpeeds\u003c\/dt\u003e\n\u003cdd\u003e2x12\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eChainrings\u003c\/dt\u003e\n\u003cdd\u003e50-34T, 52-36T\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eCrank lengths\u003c\/dt\u003e\n\u003cdd\u003e165, 170, 172.5, 175mm\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eMeasurement\u003c\/dt\u003e\n\u003cdd\u003eDual-sided, 24 strain sensors\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eAccuracy\u003c\/dt\u003e\n\u003cdd\u003e±2.0%\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eBattery\u003c\/dt\u003e\n\u003cdd\u003eIntegrated Li-ion 3.7V 0.66Ah, approx. 300 hours\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eCharging\u003c\/dt\u003e\n\u003cdd\u003eEW-EC300 cable\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eConnectivity\u003c\/dt\u003e\n\u003cdd\u003eBluetooth LE and ANT+\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e758g (50-34T), 769g (52-36T)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eBottom bracket\u003c\/dt\u003e\n\u003cdd\u003eHollowtech II 24mm, sold separately\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\u003c\/article\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eOrdering\u003c\/p\u003e\n\u003ch2\u003eAvailable from The Cycle Collective\u003c\/h2\u003e\n\u003cp\u003eAvailable to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"165mm \/ 50-34T","offer_id":57355824791930,"sku":"FC-R8100-P 50-34T 165mm","price":999.99,"currency_code":"GBP","in_stock":false},{"title":"170mm \/ 50-34T","offer_id":57355824824698,"sku":"FC-R8100-P 50-34T 170mm","price":999.99,"currency_code":"GBP","in_stock":false},{"title":"172.5mm \/ 50-34T","offer_id":57355824857466,"sku":"FC-R8100-P 50-34T 172.5mm","price":999.99,"currency_code":"GBP","in_stock":false},{"title":"175mm \/ 50-34T","offer_id":57355824890234,"sku":"FC-R8100-P 50-34T 175mm","price":999.99,"currency_code":"GBP","in_stock":false},{"title":"165mm \/ 52-36T","offer_id":57355824923002,"sku":"FC-R8100-P 52-36T 165mm","price":999.99,"currency_code":"GBP","in_stock":false},{"title":"170mm \/ 52-36T","offer_id":57355824955770,"sku":"FC-R8100-P 52-36T 170mm","price":999.99,"currency_code":"GBP","in_stock":false},{"title":"172.5mm \/ 52-36T","offer_id":57355824988538,"sku":"FC-R8100-P 52-36T 172.5mm","price":999.99,"currency_code":"GBP","in_stock":false},{"title":"175mm \/ 52-36T","offer_id":57355825021306,"sku":"FC-R8100-P 52-36T 175mm","price":999.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0487\/4007\/3623\/files\/350896-01_1.jpg?v=1791319153"},{"product_id":"shimano-ultegra-rd-r8150-di2-rear-derailleur","title":"Shimano Ultegra RD-R8150 Di2 Rear Derailleur","description":"\u003cstyle\u003e\n.oc{--line:#e6e6e2;--soft:#f7f7f5;--muted:#5f6368;--radius:18px;--shadow:0 10px 28px rgba(0,0,0,.07);font-family:Inter,system-ui,-apple-system,\"Segoe UI\",sans-serif;color:#111;line-height:1.55}\n.oc *{box-sizing:border-box}\n.oc h1,.oc h2,.oc h3{letter-spacing:-.035em;line-height:1.05;margin:0 0 1rem}\n.oc h1{font-size:clamp(2.4rem,7vw,5.5rem)}\n.oc h2{font-size:clamp(1.7rem,3.5vw,3rem)}\n.oc h3{font-size:clamp(1.2rem,1.8vw,1.6rem)}\n.oc .eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;color:#777;margin:0 0 .8rem}\n.oc .hero{text-align:center;padding:clamp(2.5rem,6vw,5rem) clamp(1rem,4vw,3rem);background:linear-gradient(180deg,#fff 0%,#f8f8f5 100%)}\n.oc .hero .lede{max-width:820px;margin:0 auto;font-size:clamp(1.05rem,1.8vw,1.4rem);color:var(--muted)}\n.oc .section{padding:clamp(2rem,5vw,4.5rem) clamp(1rem,4vw,3rem)}\n.oc .soft{background:var(--soft)}\n.oc .intro{max-width:820px;margin:0 auto 2rem;text-align:center}\n.oc .intro p{color:var(--muted);font-size:clamp(1rem,1.5vw,1.2rem)}\n.oc .grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(240px,1fr));max-width:1300px;margin:0 auto}\n.oc .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}\n.oc .card .body{padding:1.2rem 1.4rem}\n.oc .card .body p{margin:.4rem 0 0;color:var(--muted)}\n.oc .stat{padding:1.6rem 1.4rem;display:flex;flex-direction:column;justify-content:flex-end;min-height:150px}\n.oc .stat strong{font-size:clamp(1.6rem,3.2vw,2.6rem);line-height:1;letter-spacing:-.04em}\n.oc .stat span{color:var(--muted);margin-top:.5rem;font-size:.95rem}\n.oc .spec-grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(300px,1fr));max-width:1300px;margin:0 auto}\n.oc .spec-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.2rem 1.5rem}\n.oc .spec-row{display:grid;grid-template-columns:130px 1fr;gap:1rem;padding:.8rem 0;border-top:1px solid var(--line)}\n.oc .spec-row:first-of-type{border-top:0}\n.oc .spec-row dt{font-weight:800;margin:0}\n.oc .spec-row dd{margin:0;color:#666}\n.oc dl{margin:0}\n@media(max-width:620px){.oc .spec-row{grid-template-columns:1fr;gap:.2rem}}\n\u003c\/style\u003e\u003cdiv class=\"oc\"\u003e\n\u003cheader class=\"hero\"\u003e\u003cp class=\"eyebrow\"\u003eUltegra Di2 rear mech\u003c\/p\u003e\n\u003ch1\u003eShimano Ultegra RD-R8150 Di2 Rear Derailleur\u003c\/h1\u003e\n\u003cp class=\"lede\"\u003eUltegra's 12-speed Di2 rear mech brings Dura-Ace shift speed and the same semi-wireless layout at a lower price and a little more weight. A single cage runs cassettes from 11-28T to 11-34T.\u003c\/p\u003e\u003c\/header\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"grid\"\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e12\u003c\/strong\u003e\u003cspan\u003eSpeeds\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e34T\u003c\/strong\u003e\u003cspan\u003eMax low sprocket\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e262g\u003c\/strong\u003e\u003cspan\u003eApprox. weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e39T\u003c\/strong\u003e\u003cspan\u003eTotal capacity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eHighlights\u003c\/p\u003e\n\u003ch2\u003eWhy we rate it\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid\"\u003e\n\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eWireless hub\u003c\/h3\u003e\n\u003cp\u003eThe mech carries the wireless receiver, charging port and status LED, so the levers talk directly to it with no junction box.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eDura-Ace-level speed\u003c\/h3\u003e\n\u003cp\u003eShares the quicker motor and linkage design of the Dura-Ace mech, so shift timing is on a par with the top tier.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eOne cage covers it all\u003c\/h3\u003e\n\u003cp\u003eThe same mech suits close-ratio race cassettes and wide 11-34T climbing setups.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eBuilt to shrug off knocks\u003c\/h3\u003e\n\u003cp\u003eA saver function protects the motor gearbox if the mech takes a hit.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eTech specs\u003c\/p\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cp\u003eManufacturer specification. Details may change without notice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-grid\"\u003e\u003carticle class=\"spec-card\"\u003e\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eModel code\u003c\/dt\u003e\n\u003cdd\u003eRD-R8150\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSpeeds\u003c\/dt\u003e\n\u003cdd\u003e12\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eActuation\u003c\/dt\u003e\n\u003cdd\u003eDi2 (semi-wireless, battery-in-frame)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eMax low sprocket\u003c\/dt\u003e\n\u003cdd\u003e34T\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eMin low sprocket\u003c\/dt\u003e\n\u003cdd\u003e28T\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eTop sprocket\u003c\/dt\u003e\n\u003cdd\u003e11T\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eTotal capacity\u003c\/dt\u003e\n\u003cdd\u003e39T\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eCage\u003c\/dt\u003e\n\u003cdd\u003eSingle length, Shadow RD\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003ePulleys\u003c\/dt\u003e\n\u003cdd\u003e11T with cartridge bearings\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003ePorts\u003c\/dt\u003e\n\u003cdd\u003e1 x EW-SD300 E-Tube, 1 x charging port\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003eApprox. 262g\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eCompatible levers\u003c\/dt\u003e\n\u003cdd\u003eST-R8170 (wireless)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\u003c\/article\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eOrdering\u003c\/p\u003e\n\u003ch2\u003eAvailable from The Cycle Collective\u003c\/h2\u003e\n\u003cp\u003eAvailable to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":57355828003194,"sku":"RD-R8150","price":379.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0487\/4007\/3623\/files\/RD-R8150-primary_1.jpg?v=1791317156"},{"product_id":"shimano-ultegra-st-r8170-di2-hydraulic-disc-shift-brake-lever","title":"Shimano Ultegra ST-R8170 Di2 Hydraulic Disc Shift-Brake Lever","description":"\u003cstyle\u003e\n.oc{--line:#e6e6e2;--soft:#f7f7f5;--muted:#5f6368;--radius:18px;--shadow:0 10px 28px rgba(0,0,0,.07);font-family:Inter,system-ui,-apple-system,\"Segoe UI\",sans-serif;color:#111;line-height:1.55}\n.oc *{box-sizing:border-box}\n.oc h1,.oc h2,.oc h3{letter-spacing:-.035em;line-height:1.05;margin:0 0 1rem}\n.oc h1{font-size:clamp(2.4rem,7vw,5.5rem)}\n.oc h2{font-size:clamp(1.7rem,3.5vw,3rem)}\n.oc h3{font-size:clamp(1.2rem,1.8vw,1.6rem)}\n.oc .eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;color:#777;margin:0 0 .8rem}\n.oc .hero{text-align:center;padding:clamp(2.5rem,6vw,5rem) clamp(1rem,4vw,3rem);background:linear-gradient(180deg,#fff 0%,#f8f8f5 100%)}\n.oc .hero .lede{max-width:820px;margin:0 auto;font-size:clamp(1.05rem,1.8vw,1.4rem);color:var(--muted)}\n.oc .section{padding:clamp(2rem,5vw,4.5rem) clamp(1rem,4vw,3rem)}\n.oc .soft{background:var(--soft)}\n.oc .intro{max-width:820px;margin:0 auto 2rem;text-align:center}\n.oc .intro p{color:var(--muted);font-size:clamp(1rem,1.5vw,1.2rem)}\n.oc .grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(240px,1fr));max-width:1300px;margin:0 auto}\n.oc .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}\n.oc .card .body{padding:1.2rem 1.4rem}\n.oc .card .body p{margin:.4rem 0 0;color:var(--muted)}\n.oc .stat{padding:1.6rem 1.4rem;display:flex;flex-direction:column;justify-content:flex-end;min-height:150px}\n.oc .stat strong{font-size:clamp(1.6rem,3.2vw,2.6rem);line-height:1;letter-spacing:-.04em}\n.oc .stat span{color:var(--muted);margin-top:.5rem;font-size:.95rem}\n.oc .spec-grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(300px,1fr));max-width:1300px;margin:0 auto}\n.oc .spec-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.2rem 1.5rem}\n.oc .spec-row{display:grid;grid-template-columns:130px 1fr;gap:1rem;padding:.8rem 0;border-top:1px solid var(--line)}\n.oc .spec-row:first-of-type{border-top:0}\n.oc .spec-row dt{font-weight:800;margin:0}\n.oc .spec-row dd{margin:0;color:#666}\n.oc dl{margin:0}\n@media(max-width:620px){.oc .spec-row{grid-template-columns:1fr;gap:.2rem}}\n\u003c\/style\u003e\u003cdiv class=\"oc\"\u003e\n\u003cheader class=\"hero\"\u003e\u003cp class=\"eyebrow\"\u003eDi2 shift-brake lever\u003c\/p\u003e\n\u003ch1\u003eShimano Ultegra ST-R8170 Di2 Hydraulic Disc Shift-Brake Lever\u003c\/h1\u003e\n\u003cp class=\"lede\"\u003eUltegra's 12-speed wireless Di2 lever brings Dura-Ace shifting features and Servo Wave disc braking for a little more weight and a lot less money. Available as a lever alone or as a pre-bled set with the BR-R8170 calliper.\u003c\/p\u003e\u003c\/header\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"grid\"\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e12\u003c\/strong\u003e\u003cspan\u003eSpeeds\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e195g\u003c\/strong\u003e\u003cspan\u003ePer lever\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e3\u003c\/strong\u003e\u003cspan\u003eShift buttons\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003eCR1632\u003c\/strong\u003e\u003cspan\u003eCoin-cell battery\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eHighlights\u003c\/p\u003e\n\u003ch2\u003eWhy we rate it\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid\"\u003e\n\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eSame shape as Dura-Ace\u003c\/h3\u003e\n\u003cp\u003eThe hood and lever geometry mirror the R9270, so the ergonomics are identical at a lower price.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eServo Wave brakes\u003c\/h3\u003e\n\u003cp\u003eFast pad engagement and strong, controllable stopping in all weathers.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eProgrammable hood button\u003c\/h3\u003e\n\u003cp\u003eA third button on top of the hood can be set up in E-Tube for shifting or head unit control.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eSatellite switch port\u003c\/h3\u003e\n\u003cp\u003ePlug in SW-RS801 sprint, climbing or aero-bar switches for extra shift points.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eSimple maintenance\u003c\/h3\u003e\n\u003cp\u003eOne CR1632 coin cell per lever and an easy-bleed hydraulic system.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eTech specs\u003c\/p\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cp\u003eManufacturer specification. Details may change without notice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-grid\"\u003e\n\u003carticle class=\"spec-card\"\u003e\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eModel code\u003c\/dt\u003e\n\u003cdd\u003eST-R8170-L (left, front shift) and ST-R8170-R (right, rear shift)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSeries\u003c\/dt\u003e\n\u003cdd\u003eUltegra R8100\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSpeeds\u003c\/dt\u003e\n\u003cdd\u003e2x12\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eShifting\u003c\/dt\u003e\n\u003cdd\u003eDi2 wireless to derailleurs, wired option via SD300 port\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eBrake type\u003c\/dt\u003e\n\u003cdd\u003eHydraulic disc (mineral oil), Servo Wave\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e195g per lever (claimed)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eBattery\u003c\/dt\u003e\n\u003cdd\u003e1x CR1632 per lever\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eShift buttons\u003c\/dt\u003e\n\u003cdd\u003e3 per lever\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSatellite switch ports\u003c\/dt\u003e\n\u003cdd\u003e1 per lever\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eAdjustment\u003c\/dt\u003e\n\u003cdd\u003eReach adjust and free stroke adjust\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eCalliper in set\u003c\/dt\u003e\n\u003cdd\u003eBR-R8170 flat mount, 2-piston (With Caliper option)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\u003c\/article\u003e\u003carticle class=\"spec-card\"\u003e\u003ch3\u003eIn the box\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eIncludes\u003c\/dt\u003e\n\u003cdd\u003eST-R8170 Di2 shift-brake lever\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eIncludes\u003c\/dt\u003e\n\u003cdd\u003eWith Caliper option: bled BR-R8170 flat mount calliper with pads, hose and mineral oil\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eOrdering\u003c\/p\u003e\n\u003ch2\u003eAvailable from The Cycle Collective\u003c\/h2\u003e\n\u003cp\u003eAvailable to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Left \/ Lever Only","offer_id":57355830362490,"sku":"ST-R8170-L","price":349.99,"currency_code":"GBP","in_stock":false},{"title":"Right \/ Lever Only","offer_id":57355830395258,"sku":"ST-R8170-R","price":349.99,"currency_code":"GBP","in_stock":false},{"title":"Left \/ With Caliper","offer_id":57355830428026,"sku":"R8170DLR","price":449.99,"currency_code":"GBP","in_stock":false},{"title":"Right \/ With Caliper","offer_id":57355830460794,"sku":"R8170DRF","price":449.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0487\/4007\/3623\/files\/ST-R8170-R-shic219-primary_1.jpg?v=1791317426"},{"product_id":"shimano-ultegra-cs-r8101-12-12-speed-cassette","title":"Shimano Ultegra CS-R8101-12 12-Speed Cassette","description":"\u003cstyle\u003e\n.oc{--line:#e6e6e2;--soft:#f7f7f5;--muted:#5f6368;--radius:18px;--shadow:0 10px 28px rgba(0,0,0,.07);font-family:Inter,system-ui,-apple-system,\"Segoe UI\",sans-serif;color:#111;line-height:1.55}\n.oc *{box-sizing:border-box}\n.oc h1,.oc h2,.oc h3{letter-spacing:-.035em;line-height:1.05;margin:0 0 1rem}\n.oc h1{font-size:clamp(2.4rem,7vw,5.5rem)}\n.oc h2{font-size:clamp(1.7rem,3.5vw,3rem)}\n.oc h3{font-size:clamp(1.2rem,1.8vw,1.6rem)}\n.oc .eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;color:#777;margin:0 0 .8rem}\n.oc .hero{text-align:center;padding:clamp(2.5rem,6vw,5rem) clamp(1rem,4vw,3rem);background:linear-gradient(180deg,#fff 0%,#f8f8f5 100%)}\n.oc .hero .lede{max-width:820px;margin:0 auto;font-size:clamp(1.05rem,1.8vw,1.4rem);color:var(--muted)}\n.oc .section{padding:clamp(2rem,5vw,4.5rem) clamp(1rem,4vw,3rem)}\n.oc .soft{background:var(--soft)}\n.oc .intro{max-width:820px;margin:0 auto 2rem;text-align:center}\n.oc .intro p{color:var(--muted);font-size:clamp(1rem,1.5vw,1.2rem)}\n.oc .grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(240px,1fr));max-width:1300px;margin:0 auto}\n.oc .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}\n.oc .card .body{padding:1.2rem 1.4rem}\n.oc .card .body p{margin:.4rem 0 0;color:var(--muted)}\n.oc .stat{padding:1.6rem 1.4rem;display:flex;flex-direction:column;justify-content:flex-end;min-height:150px}\n.oc .stat strong{font-size:clamp(1.6rem,3.2vw,2.6rem);line-height:1;letter-spacing:-.04em}\n.oc .stat span{color:var(--muted);margin-top:.5rem;font-size:.95rem}\n.oc .spec-grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(300px,1fr));max-width:1300px;margin:0 auto}\n.oc .spec-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.2rem 1.5rem}\n.oc .spec-row{display:grid;grid-template-columns:130px 1fr;gap:1rem;padding:.8rem 0;border-top:1px solid var(--line)}\n.oc .spec-row:first-of-type{border-top:0}\n.oc .spec-row dt{font-weight:800;margin:0}\n.oc .spec-row dd{margin:0;color:#666}\n.oc dl{margin:0}\n@media(max-width:620px){.oc .spec-row{grid-template-columns:1fr;gap:.2rem}}\n\u003c\/style\u003e\u003cdiv class=\"oc\"\u003e\n\u003cheader class=\"hero\"\u003e\u003cp class=\"eyebrow\"\u003eUltegra 12-speed cassette\u003c\/p\u003e\n\u003ch1\u003eShimano Ultegra CS-R8101-12 12-Speed Cassette\u003c\/h1\u003e\n\u003cp class=\"lede\"\u003eThe current Ultegra 12-speed cassette, revised so it works with both Di2 and mechanical 12-speed Shimano road groups. It suits Ultegra, 105 and GRX 2x drivetrains in a close 11-30T or a climbing-friendly 11-34T.\u003c\/p\u003e\u003c\/header\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"grid\"\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e291g\u003c\/strong\u003e\u003cspan\u003eWeight (11-30T)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e12\u003c\/strong\u003e\u003cspan\u003eSpeeds\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e11-34T\u003c\/strong\u003e\u003cspan\u003eWidest range\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003eDi2 and mech\u003c\/strong\u003e\u003cspan\u003eCompatibility\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eHighlights\u003c\/p\u003e\n\u003ch2\u003eWhy we rate it\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid\"\u003e\n\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eWorks with mechanical and Di2\u003c\/h3\u003e\n\u003cp\u003eThe R8101 revision replaces the original CS-R8100 and is specified for both electronic and cable-operated 12-speed Shimano road groups.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eHyperglide+ shifting\u003c\/h3\u003e\n\u003cp\u003eShift ramps and tooth profiles guide the chain across sprockets cleanly, cutting shift time noticeably compared with older Hyperglide.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eSensible weight saving\u003c\/h3\u003e\n\u003cp\u003eSteel sprockets sit on two aluminium carriers, keeping weight down without the cost of titanium.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eRoad and gravel ranges\u003c\/h3\u003e\n\u003cp\u003e11-30T for tight road spacing, or 11-34T for big climbs and 2x gravel setups.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eWide wheel compatibility\u003c\/h3\u003e\n\u003cp\u003eFits Shimano 12-speed road and conventional 11-speed road freehub bodies.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eTech specs\u003c\/p\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cp\u003eManufacturer specification. Details may change without notice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-grid\"\u003e\n\u003carticle class=\"spec-card\"\u003e\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eModel code\u003c\/dt\u003e\n\u003cdd\u003eCS-R8101-12\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSpeeds\u003c\/dt\u003e\n\u003cdd\u003e12\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eRatios\u003c\/dt\u003e\n\u003cdd\u003e11-30T, 11-34T\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003e11-30T sprockets\u003c\/dt\u003e\n\u003cdd\u003e11-12-13-14-15-16-17-19-21-24-27-30\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003e11-34T sprockets\u003c\/dt\u003e\n\u003cdd\u003e11-12-13-14-15-17-19-21-24-27-30-34\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e291g (11-30T), 345g (11-34T)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eMaterials\u003c\/dt\u003e\n\u003cdd\u003eSteel sprockets, two aluminium carriers, aluminium lockring\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eFreehub\u003c\/dt\u003e\n\u003cdd\u003eShimano HG road 12-speed (HG L2) and road 11-speed\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eCompatible derailleurs\u003c\/dt\u003e\n\u003cdd\u003eRD-R9250, RD-R8150, RD-R7150, RD-R7100 (11-34T), RD-RX820\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eChain\u003c\/dt\u003e\n\u003cdd\u003eShimano 12-speed HG+ (CN-M8100 recommended)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eReplaces\u003c\/dt\u003e\n\u003cdd\u003eCS-R8100-12\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\u003c\/article\u003e\u003carticle class=\"spec-card\"\u003e\u003ch3\u003eIn the box\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eIncludes\u003c\/dt\u003e\n\u003cdd\u003eCassette\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eIncludes\u003c\/dt\u003e\n\u003cdd\u003eLockring\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eOrdering\u003c\/p\u003e\n\u003ch2\u003eAvailable from The Cycle Collective\u003c\/h2\u003e\n\u003cp\u003eAvailable to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"11-30T","offer_id":57355830493562,"sku":"ICSR810112130","price":119.99,"currency_code":"GBP","in_stock":false},{"title":"11-34T","offer_id":57355830526330,"sku":"ICSR810112134","price":119.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0487\/4007\/3623\/files\/shimano-ultegra-cs-r8101-12-speed-cassette-1179330577.jpg?v=1791317423"},{"product_id":"shimano-ultegra-fd-r8150-di2-front-derailleur","title":"Shimano Ultegra FD-R8150 Di2 Front Derailleur","description":"\u003cstyle\u003e\n.oc{--line:#e6e6e2;--soft:#f7f7f5;--muted:#5f6368;--radius:18px;--shadow:0 10px 28px rgba(0,0,0,.07);font-family:Inter,system-ui,-apple-system,\"Segoe UI\",sans-serif;color:#111;line-height:1.55}\n.oc *{box-sizing:border-box}\n.oc h1,.oc h2,.oc h3{letter-spacing:-.035em;line-height:1.05;margin:0 0 1rem}\n.oc h1{font-size:clamp(2.4rem,7vw,5.5rem)}\n.oc h2{font-size:clamp(1.7rem,3.5vw,3rem)}\n.oc h3{font-size:clamp(1.2rem,1.8vw,1.6rem)}\n.oc .eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;color:#777;margin:0 0 .8rem}\n.oc .hero{text-align:center;padding:clamp(2.5rem,6vw,5rem) clamp(1rem,4vw,3rem);background:linear-gradient(180deg,#fff 0%,#f8f8f5 100%)}\n.oc .hero .lede{max-width:820px;margin:0 auto;font-size:clamp(1.05rem,1.8vw,1.4rem);color:var(--muted)}\n.oc .section{padding:clamp(2rem,5vw,4.5rem) clamp(1rem,4vw,3rem)}\n.oc .soft{background:var(--soft)}\n.oc .intro{max-width:820px;margin:0 auto 2rem;text-align:center}\n.oc .intro p{color:var(--muted);font-size:clamp(1rem,1.5vw,1.2rem)}\n.oc .grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(240px,1fr));max-width:1300px;margin:0 auto}\n.oc .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}\n.oc .card .body{padding:1.2rem 1.4rem}\n.oc .card .body p{margin:.4rem 0 0;color:var(--muted)}\n.oc .stat{padding:1.6rem 1.4rem;display:flex;flex-direction:column;justify-content:flex-end;min-height:150px}\n.oc .stat strong{font-size:clamp(1.6rem,3.2vw,2.6rem);line-height:1;letter-spacing:-.04em}\n.oc .stat span{color:var(--muted);margin-top:.5rem;font-size:.95rem}\n.oc .spec-grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(300px,1fr));max-width:1300px;margin:0 auto}\n.oc .spec-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.2rem 1.5rem}\n.oc .spec-row{display:grid;grid-template-columns:130px 1fr;gap:1rem;padding:.8rem 0;border-top:1px solid var(--line)}\n.oc .spec-row:first-of-type{border-top:0}\n.oc .spec-row dt{font-weight:800;margin:0}\n.oc .spec-row dd{margin:0;color:#666}\n.oc dl{margin:0}\n@media(max-width:620px){.oc .spec-row{grid-template-columns:1fr;gap:.2rem}}\n\u003c\/style\u003e\u003cdiv class=\"oc\"\u003e\n\u003cheader class=\"hero\"\u003e\u003cp class=\"eyebrow\"\u003eUltegra Di2 front mech\u003c\/p\u003e\n\u003ch1\u003eShimano Ultegra FD-R8150 Di2 Front Derailleur\u003c\/h1\u003e\n\u003cp class=\"lede\"\u003eThe 2x12 Ultegra Di2 front mech shares Dura-Ace's quick, self-trimming action in a slightly heavier package. It suits 50-54T outer rings and full or semi-synchronised shifting.\u003c\/p\u003e\u003c\/header\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"grid\"\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e116g\u003c\/strong\u003e\u003cspan\u003eClaimed weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e50-54T\u003c\/strong\u003e\u003cspan\u003eOuter chainring\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e16T\u003c\/strong\u003e\u003cspan\u003eMax chainring difference\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e2x12\u003c\/strong\u003e\u003cspan\u003eDrivetrain\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eHighlights\u003c\/p\u003e\n\u003ch2\u003eWhy we rate it\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid\"\u003e\n\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eFast, positive changes\u003c\/h3\u003e\n\u003cp\u003eMoves between rings quickly and cleanly, even under load on a climb.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eHands-off trimming\u003c\/h3\u003e\n\u003cp\u003eThe cage tracks the rear mech position automatically, so you never hear chain rub.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eSynchro Shift support\u003c\/h3\u003e\n\u003cp\u003eFull and semi-synchronised modes can be set up in the E-Tube app.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eCompact, aero body\u003c\/h3\u003e\n\u003cp\u003eThe smaller body tidies the seat tube area and reduces frontal area over the 11-speed design.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eTech specs\u003c\/p\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cp\u003eManufacturer specification. Details may change without notice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-grid\"\u003e\u003carticle class=\"spec-card\"\u003e\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eModel code\u003c\/dt\u003e\n\u003cdd\u003eFD-R8150 (FD-R8150-F)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSpeeds\u003c\/dt\u003e\n\u003cdd\u003e2x12\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eActuation\u003c\/dt\u003e\n\u003cdd\u003eDi2\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eMount\u003c\/dt\u003e\n\u003cdd\u003eBraze-on (clamp adapter sold separately)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eOuter chainring\u003c\/dt\u003e\n\u003cdd\u003e50-54T\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eMax chainring difference\u003c\/dt\u003e\n\u003cdd\u003e16T\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eChainline\u003c\/dt\u003e\n\u003cdd\u003e44.5mm\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eChainstay angle\u003c\/dt\u003e\n\u003cdd\u003e61-66 degrees\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003ePort\u003c\/dt\u003e\n\u003cdd\u003e1 x EW-SD300 E-Tube\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e116g (Shimano claimed)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\u003c\/article\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eOrdering\u003c\/p\u003e\n\u003ch2\u003eAvailable from The Cycle Collective\u003c\/h2\u003e\n\u003cp\u003eAvailable to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":57355833115002,"sku":"FD-R8150-F","price":249.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0487\/4007\/3623\/files\/FD-R8150-shic219-primary_3.jpg?v=1791317683"},{"product_id":"shimano-ultegra-cn-m8100-12-speed-chain","title":"Shimano Ultegra CN-M8100 12-Speed Chain","description":"\u003cstyle\u003e\n.oc{--line:#e6e6e2;--soft:#f7f7f5;--muted:#5f6368;--radius:18px;--shadow:0 10px 28px rgba(0,0,0,.07);font-family:Inter,system-ui,-apple-system,\"Segoe UI\",sans-serif;color:#111;line-height:1.55}\n.oc *{box-sizing:border-box}\n.oc h1,.oc h2,.oc h3{letter-spacing:-.035em;line-height:1.05;margin:0 0 1rem}\n.oc h1{font-size:clamp(2.4rem,7vw,5.5rem)}\n.oc h2{font-size:clamp(1.7rem,3.5vw,3rem)}\n.oc h3{font-size:clamp(1.2rem,1.8vw,1.6rem)}\n.oc .eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;color:#777;margin:0 0 .8rem}\n.oc .hero{text-align:center;padding:clamp(2.5rem,6vw,5rem) clamp(1rem,4vw,3rem);background:linear-gradient(180deg,#fff 0%,#f8f8f5 100%)}\n.oc .hero .lede{max-width:820px;margin:0 auto;font-size:clamp(1.05rem,1.8vw,1.4rem);color:var(--muted)}\n.oc .section{padding:clamp(2rem,5vw,4.5rem) clamp(1rem,4vw,3rem)}\n.oc .soft{background:var(--soft)}\n.oc .intro{max-width:820px;margin:0 auto 2rem;text-align:center}\n.oc .intro p{color:var(--muted);font-size:clamp(1rem,1.5vw,1.2rem)}\n.oc .grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(240px,1fr));max-width:1300px;margin:0 auto}\n.oc .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}\n.oc .card .body{padding:1.2rem 1.4rem}\n.oc .card .body p{margin:.4rem 0 0;color:var(--muted)}\n.oc .stat{padding:1.6rem 1.4rem;display:flex;flex-direction:column;justify-content:flex-end;min-height:150px}\n.oc .stat strong{font-size:clamp(1.6rem,3.2vw,2.6rem);line-height:1;letter-spacing:-.04em}\n.oc .stat span{color:var(--muted);margin-top:.5rem;font-size:.95rem}\n.oc .spec-grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(300px,1fr));max-width:1300px;margin:0 auto}\n.oc .spec-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.2rem 1.5rem}\n.oc .spec-row{display:grid;grid-template-columns:130px 1fr;gap:1rem;padding:.8rem 0;border-top:1px solid var(--line)}\n.oc .spec-row:first-of-type{border-top:0}\n.oc .spec-row dt{font-weight:800;margin:0}\n.oc .spec-row dd{margin:0;color:#666}\n.oc dl{margin:0}\n@media(max-width:620px){.oc .spec-row{grid-template-columns:1fr;gap:.2rem}}\n\u003c\/style\u003e\u003cdiv class=\"oc\"\u003e\n\u003cheader class=\"hero\"\u003e\u003cp class=\"eyebrow\"\u003eUltegra and XT 12-speed chain\u003c\/p\u003e\n\u003ch1\u003eShimano Ultegra CN-M8100 12-Speed Chain\u003c\/h1\u003e\n\u003cp class=\"lede\"\u003eThe 12-speed HG+ chain specified for Ultegra R8100 and Deore XT, balancing low weight with chromed inner plates for long life. A Quick-Link is included.\u003c\/p\u003e\u003c\/header\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"grid\"\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e252g\u003c\/strong\u003e\u003cspan\u003eWeight (114 links)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e12\u003c\/strong\u003e\u003cspan\u003eSpeeds\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003eChromed\u003c\/strong\u003e\u003cspan\u003eInner plates\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e3\u003c\/strong\u003e\u003cspan\u003eLengths\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eHighlights\u003c\/p\u003e\n\u003ch2\u003eWhy we rate it\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid\"\u003e\n\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eDurable chromed plates\u003c\/h3\u003e\n\u003cp\u003eHard-chromed inner plates resist wear, so the chain and cassette last longer between replacements.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eHyperglide+ ready\u003c\/h3\u003e\n\u003cp\u003ePlate shaping matches Shimano's 12-speed cassettes and chainrings for quick, quiet shifting.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eBetter chain retention\u003c\/h3\u003e\n\u003cp\u003eExtended inner plates hold the chainring teeth securely over rough gravel and cobbles.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eTool-free connection\u003c\/h3\u003e\n\u003cp\u003eSupplied with an SM-CN910-12 Quick-Link for straightforward fitting and cleaning.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eLengths for every build\u003c\/h3\u003e\n\u003cp\u003e116 links suits most road bikes, 126 for larger frames and 2x gravel, 138 for long-stay or 1x 10-51T setups.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eTech specs\u003c\/p\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cp\u003eManufacturer specification. Details may change without notice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-grid\"\u003e\n\u003carticle class=\"spec-card\"\u003e\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eModel code\u003c\/dt\u003e\n\u003cdd\u003eCN-M8100\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSpeeds\u003c\/dt\u003e\n\u003cdd\u003e12\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003ePins\u003c\/dt\u003e\n\u003cdd\u003eSolid, directional chain\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003ePlates\u003c\/dt\u003e\n\u003cdd\u003eChromed inner plates\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e252g (114 links)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eConnector\u003c\/dt\u003e\n\u003cdd\u003eSM-CN910-12 Quick-Link included\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eLengths\u003c\/dt\u003e\n\u003cdd\u003e116, 126 and 138 links\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eCompatibility\u003c\/dt\u003e\n\u003cdd\u003eDura-Ace, Ultegra, 105 2x12, GRX 1x12 and 2x12, MTB 12-speed\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\u003c\/article\u003e\u003carticle class=\"spec-card\"\u003e\u003ch3\u003eIn the box\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eIncludes\u003c\/dt\u003e\n\u003cdd\u003eChain\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eIncludes\u003c\/dt\u003e\n\u003cdd\u003eSM-CN910-12 Quick-Link\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eOrdering\u003c\/p\u003e\n\u003ch2\u003eAvailable from The Cycle Collective\u003c\/h2\u003e\n\u003cp\u003eAvailable to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"126 Links","offer_id":57355837276538,"sku":"ICNM8100126Q","price":54.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0487\/4007\/3623\/files\/156482_1.jpg?v=1791317994"},{"product_id":"shimano-ultegra-st-r8150-di2-rim-brake-shift-brake-lever","title":"Shimano Ultegra ST-R8150 Di2 Rim Brake Shift-Brake Lever","description":"\u003cstyle\u003e\n.oc{--line:#e6e6e2;--soft:#f7f7f5;--muted:#5f6368;--radius:18px;--shadow:0 10px 28px rgba(0,0,0,.07);font-family:Inter,system-ui,-apple-system,\"Segoe UI\",sans-serif;color:#111;line-height:1.55}\n.oc *{box-sizing:border-box}\n.oc h1,.oc h2,.oc h3{letter-spacing:-.035em;line-height:1.05;margin:0 0 1rem}\n.oc h1{font-size:clamp(2.4rem,7vw,5.5rem)}\n.oc h2{font-size:clamp(1.7rem,3.5vw,3rem)}\n.oc h3{font-size:clamp(1.2rem,1.8vw,1.6rem)}\n.oc .eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:700;color:#777;margin:0 0 .8rem}\n.oc .hero{text-align:center;padding:clamp(2.5rem,6vw,5rem) clamp(1rem,4vw,3rem);background:linear-gradient(180deg,#fff 0%,#f8f8f5 100%)}\n.oc .hero .lede{max-width:820px;margin:0 auto;font-size:clamp(1.05rem,1.8vw,1.4rem);color:var(--muted)}\n.oc .section{padding:clamp(2rem,5vw,4.5rem) clamp(1rem,4vw,3rem)}\n.oc .soft{background:var(--soft)}\n.oc .intro{max-width:820px;margin:0 auto 2rem;text-align:center}\n.oc .intro p{color:var(--muted);font-size:clamp(1rem,1.5vw,1.2rem)}\n.oc .grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(240px,1fr));max-width:1300px;margin:0 auto}\n.oc .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}\n.oc .card .body{padding:1.2rem 1.4rem}\n.oc .card .body p{margin:.4rem 0 0;color:var(--muted)}\n.oc .stat{padding:1.6rem 1.4rem;display:flex;flex-direction:column;justify-content:flex-end;min-height:150px}\n.oc .stat strong{font-size:clamp(1.6rem,3.2vw,2.6rem);line-height:1;letter-spacing:-.04em}\n.oc .stat span{color:var(--muted);margin-top:.5rem;font-size:.95rem}\n.oc .spec-grid{display:grid;gap:clamp(1rem,2vw,1.6rem);grid-template-columns:repeat(auto-fit,minmax(300px,1fr));max-width:1300px;margin:0 auto}\n.oc .spec-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.2rem 1.5rem}\n.oc .spec-row{display:grid;grid-template-columns:130px 1fr;gap:1rem;padding:.8rem 0;border-top:1px solid var(--line)}\n.oc .spec-row:first-of-type{border-top:0}\n.oc .spec-row dt{font-weight:800;margin:0}\n.oc .spec-row dd{margin:0;color:#666}\n.oc dl{margin:0}\n@media(max-width:620px){.oc .spec-row{grid-template-columns:1fr;gap:.2rem}}\n\u003c\/style\u003e\u003cdiv class=\"oc\"\u003e\n\u003cheader class=\"hero\"\u003e\u003cp class=\"eyebrow\"\u003eDi2 rim brake lever\u003c\/p\u003e\n\u003ch1\u003eShimano Ultegra ST-R8150 Di2 Rim Brake Shift-Brake Lever\u003c\/h1\u003e\n\u003cp class=\"lede\"\u003eA wired 12-speed Ultegra Di2 lever for rim-brake bikes, giving older or lightweight frames access to the current 12-speed drivetrain. Sold singly or as a pair.\u003c\/p\u003e\u003c\/header\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"grid\"\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e12\u003c\/strong\u003e\u003cspan\u003eSpeeds\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e148g\u003c\/strong\u003e\u003cspan\u003ePer lever\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003eWired\u003c\/strong\u003e\u003cspan\u003eDi2 shifting\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003eRim\u003c\/strong\u003e\u003cspan\u003eBrake type\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eHighlights\u003c\/p\u003e\n\u003ch2\u003eWhy we rate it\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"grid\"\u003e\n\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eRim brake compatible\u003c\/h3\u003e\n\u003cp\u003eWorks with Shimano's dual-pivot rim callipers, ideal for upgrading a rim-brake frame.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eNo lever batteries\u003c\/h3\u003e\n\u003cp\u003eWired Di2 means the levers draw power from the main system battery.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eDefined button feel\u003c\/h3\u003e\n\u003cp\u003eClearly separated buttons give a positive click even with winter gloves.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eSatellite port\u003c\/h3\u003e\n\u003cp\u003eAdd SW-RS801 sprint or climbing switches for extra shift points.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eTech specs\u003c\/p\u003e\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cp\u003eManufacturer specification. Details may change without notice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-grid\"\u003e\n\u003carticle class=\"spec-card\"\u003e\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eModel code\u003c\/dt\u003e\n\u003cdd\u003eST-R8150-L and ST-R8150-R\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSeries\u003c\/dt\u003e\n\u003cdd\u003eUltegra R8100\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSpeeds\u003c\/dt\u003e\n\u003cdd\u003e2x12\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eShifting\u003c\/dt\u003e\n\u003cdd\u003eDi2, wired (SD300)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eBrake type\u003c\/dt\u003e\n\u003cdd\u003eRim (cable-operated)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e148g per lever (claimed)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSD300 ports\u003c\/dt\u003e\n\u003cdd\u003e2 per lever\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSatellite switch ports\u003c\/dt\u003e\n\u003cdd\u003e1 per lever\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eShift buttons\u003c\/dt\u003e\n\u003cdd\u003e3 per lever\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eAdjustment\u003c\/dt\u003e\n\u003cdd\u003eReach adjust\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\u003c\/article\u003e\u003carticle class=\"spec-card\"\u003e\u003ch3\u003eIn the box\u003c\/h3\u003e\n\u003cdl\u003e\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eIncludes\u003c\/dt\u003e\n\u003cdd\u003eST-R8150 Di2 lever(s)\u003c\/dd\u003e\n\u003c\/div\u003e\u003c\/dl\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section soft\"\u003e\u003cdiv class=\"intro\"\u003e\n\u003cp class=\"eyebrow\"\u003eOrdering\u003c\/p\u003e\n\u003ch2\u003eAvailable from The Cycle Collective\u003c\/h2\u003e\n\u003cp\u003eAvailable to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Left","offer_id":57355837309306,"sku":"ST-R8150-L","price":199.99,"currency_code":"GBP","in_stock":false},{"title":"Right","offer_id":57355837342074,"sku":"ST-R8150-R","price":199.99,"currency_code":"GBP","in_stock":false},{"title":"Pair","offer_id":57355837374842,"sku":"ST-R8150-PAIR","price":399.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0487\/4007\/3623\/files\/Shimano-Ultegra-ST-R8150-Di2-Mechanical-Lever-Right-Black.jpg?v=1791317996"}],"url":"https:\/\/thecyclecollective.cc\/collections\/shimano-ultegra.oembed","provider":"thecyclecollective.cc","version":"1.0","type":"link"}