{"product_id":"shimano-105-fc-r7100-crankset","title":"Shimano 105 FC-R7100 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\"\u003e105 12-speed crankset\u003c\/p\u003e\n\u003ch1\u003eShimano 105 FC-R7100 Crankset\u003c\/h1\u003e\n\u003cp class=\"lede\"\u003eThe 12-speed 105 crankset shares its shape and standards with Ultegra and Dura-Ace, using hollow forged arms for a stiff, durable crank at a club-rider price. It suits both 105 Di2 and mechanical 105 builds.\u003c\/p\u003e\u003c\/header\u003e\u003csection class=\"section\"\u003e\u003cdiv class=\"grid\"\u003e\n\u003cdiv class=\"card stat\"\u003e\n\u003cstrong\u003e754g\u003c\/strong\u003e\u003cspan\u003eApprox. weight (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\u003e5\u003c\/strong\u003e\u003cspan\u003eCrank lengths\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\u003eHollowtech II construction\u003c\/h3\u003e\n\u003cp\u003eHollow forged aluminium arms on a 24mm axle give a stiff, light crank that feels close to the higher-tier versions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eWorks with Di2 and mechanical\u003c\/h3\u003e\n\u003cp\u003eThe same crank is used across 105 Di2 R7100 and the 2024-on mechanical 105 groupset.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eTwo sensible ratios\u003c\/h3\u003e\n\u003cp\u003e50-34T suits sportives and hilly riding, while 52-36T gives a little more top end for faster group riding.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eLengths from 160mm\u003c\/h3\u003e\n\u003cp\u003eFive arm lengths from 160mm to 175mm make it easy to fit smaller and larger riders alike.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003cdiv class=\"body\"\u003e\n\u003ch3\u003eCommon standards\u003c\/h3\u003e\n\u003cp\u003e110mm asymmetric BCD and Hollowtech II bottom brackets keep spares and upgrades simple.\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-R7100\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-row\"\u003e\n\u003cdt\u003eSeries\u003c\/dt\u003e\n\u003cdd\u003e105 R7100 (Di2 and mechanical)\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\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. 754g (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-RS501 threaded or BB-RS500-PB press-fit (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":"160mm \/ 50-34T","offer_id":57355825676666,"sku":"FCR7100M04","price":159.99,"currency_code":"GBP","in_stock":false},{"title":"165mm \/ 50-34T","offer_id":57355825709434,"sku":"FCR7100A04","price":159.99,"currency_code":"GBP","in_stock":false},{"title":"170mm \/ 50-34T","offer_id":57355825742202,"sku":"FCR7100C04","price":159.99,"currency_code":"GBP","in_stock":false},{"title":"172.5mm \/ 50-34T","offer_id":57355825774970,"sku":"FCR7100D04","price":159.99,"currency_code":"GBP","in_stock":false},{"title":"175mm \/ 50-34T","offer_id":57355825807738,"sku":"FCR7100E04","price":159.99,"currency_code":"GBP","in_stock":false},{"title":"160mm \/ 52-36T","offer_id":57355825840506,"sku":"FCR7100M26","price":159.99,"currency_code":"GBP","in_stock":false},{"title":"165mm \/ 52-36T","offer_id":57355825873274,"sku":"FCR7100A26","price":159.99,"currency_code":"GBP","in_stock":false},{"title":"170mm \/ 52-36T","offer_id":57355825906042,"sku":"FCR7100C26","price":159.99,"currency_code":"GBP","in_stock":false},{"title":"172.5mm \/ 52-36T","offer_id":57355825938810,"sku":"FCR7100D26","price":159.99,"currency_code":"GBP","in_stock":false},{"title":"175mm \/ 52-36T","offer_id":57355825971578,"sku":"FCR7100E26","price":159.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0487\/4007\/3623\/files\/FC-R7100_52-36T_C6_1.jpg?v=1791317062","url":"https:\/\/thecyclecollective.cc\/products\/shimano-105-fc-r7100-crankset","provider":"thecyclecollective.cc","version":"1.0","type":"link"}