2025 Topstone Carbon 3 GRX 1x

Introduction

Always Game

Our take on the ultimate all-round gravel bike. Go anywhere, bring everything and then keep on going.

Model Description

One chainring, endless possibilities. The Topstone 3 GRX – 1X delivers simplicity without sacrificing performance. A Shimano GRX610/820 blended group keeps shifting precise and reliable, while KingPin suspension takes the sting out of rough terrain. WTB tires keep you connected to the trail, making every ride a good onewhether its a quick lap or a full-day escapade.

What it’s for

Gravel riding & racing, bikepacking, going hard and long on dirt or pavement

Highlights

• Lightweight full carbon frameset with Kingpin rear suspension, Proportional Response size-specific construction, and StashPort downtube storage
• With a single chainring and wide-range SLX 12-speed cassette, this blend of Shimanos top-end GRX820 and GRX610 gravel groups offers a killer performance value
• Durable, dependable WTB ST i25 rims, with Shimano hubs and WTB Riddler 45c 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

Specifications

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 mountsFork Topstone Carbon, 1-1/8″ to 1.5″ steerer, 55mm OutFront offset, flat mount disc, internal routing, 12×100 thru-axle, triple bottle/gear mounts, fender mountsRims WTB ST i25 TCS, 28h, tubeless readyHubs (F) Shimano TC500, 12x100mm centerlock / (R) Shimano TC500, 12x142mm centerlockSpokes Stainless Steel, 14gTires WTB Riddler TCS Light, 700x45c, tubeless readyPedals Not includedCrank Shimano GRX 610, 40TBottom Bracket Shimano BSA 68Chain Shimano M7100, 12-speedRear Cogs Shimano SLX M7100, 10-51, 12-speedRear Derailleur Shimano GRX 822, Shadow SGSShifters Shimano GRX 610, 12-speedHandlebar Cannondale 3, butted 6061 Alloy, 16 deg flare dropGrips Cannondale KnurlCork, 2.7mmStem Cannondale C1 Conceal, Alloy, 31.8, -6Headset Acros IS52/40 ICRBrakes Shimano GRX 610 hydraulic disc, 160/160mm RT70 rotorsSaddle Selle Royal SRX OpenSeatpost Cannondale 3, 6061 Alloy, 27.2x350mmSizes 47,51,54,56,58,61Extra(s) Large StashBag downtube storage bag, tubeless valve stems