A jack-of-all-roads with zero compromises. The Topstone 3 GRX 2X is built with Shimano GRX610/820 blended group gearing and KingPin suspension to handle rough roads and smooth out the ride. WTB wheels and tires grip through dirt, gravel, and whatever’s under your treads. It’s the bike that turns any ride into an adventure story worth telling.

What it's for: Gravel riding & racing, bikepacking, going hard and long on dirt or pavement

• Lightweight full carbon frameset with Kingpin rear suspension, Proportional Response size-specific construction, and StashPort downtube storage
• A combination of Shimano’s 2x12-speed GRX gravel groups – top-end GRX820 mechanical derailleurs, with GRX610 cranks, brakes and shifters, offers a killer performance value
• Durable, dependable WTB ST i25 rims, with Shimano hubs and WTB Resolute 42c gravel tires
• Cannondale 3 flared handlebars offer comfortable, gravel-friendly hand positions
• Cannondale Wheel Sensor delivers hyper-accurate speed, distance and route info, service reminders, and more via the Cannondale App

• Model Code: C15175U
• Frame: Topstone Carbon, Kingpin suspension system, Proportional Response construction, downtube Stashport, internal cable routing, 12x142mm thru-axle, 27.2 dropper post ready, UDH, BSA 68mm threaded BB, flat mount disc, removable fender bridge, multiple gear/bottle mounts
• Fork: Topstone Carbon, 1-1/8" to 1.5" steerer, 55mm OutFront offset, flat mount disc, internal routing, 12x100 thru-axle, triple bottle/gear mounts, fender mounts
• Headset: Acros IS52/40 ICR
• Rear Derailleur: Shimano GRX 820, Shadow RD+
• Front Derailleur: Shimano GRX 820
• Shifters: Shimano GRX 610, 12-speed
• Chain: Shimano M7100, 12-speed
• Crank: Shimano GRX 610, 46/30
• Rear Cogs: Shimano HG710, 11-36, 12-speed
• Bottom Bracket: Shimano BSA 68
• Brakes: Shimano GRX 610 hydraulic disc, 160/160mm RT70 rotors
• Brake Levers: Shimano GRX 610 hydraulic disc
• Rims: WTB ST i25 TCS, 28h, tubeless ready
• Spokes: Stainless Steel, 14g
• Tire Size: 37
• Wheel Size: 700c
• Hubs: (F) Shimano TC500, 12x100mm centerlock / (R) Shimano TC500, 12x142mm centerlock
• Tires: WTB Resolute TCS Light, 700x42c, tubeless ready
• Handlebar: Cannondale 3, butted 6061 Alloy, 16 deg flare, 120mm drop: 400mm (47cm), 420mm (51-54), 440mm (56-61cm)
• Stem: Cannondale C1 Conceal, Alloy, 31.8, -6°: 70mm (47-51m), 80mm (54cm), 90mm (56-58cm), 100mm (61cm)
• Grips: Cannondale KnurlCork, 2.7mm
• Saddle: Selle Royal SRX Open
• Seatpost: Cannondale 3, 6061 Alloy, 27.2x350mm
• Extra 1: Large StashBag downtube storage bag, tubeless valve stems