Always Ready for More
A gravel bike built to unlock bigger adventures. Fast, capable and incredibly fun — the Topstone Carbon 3 GRX 1x balances comfort,
control and long-distance efficiency in one versatile package.
Model Description
The Topstone carbon frame with Kingpin suspension delivers noticeable compliance and improved control on rough terrain, without
sacrificing responsiveness. Paired with Shimano’s latest 1x12 GRX drivetrain, durable WTB wheels and 42c tubeless-ready tires, it shines
on everything from demanding training rides to multi-day bikepacking missions. With StashPort storage, generous mounting options and
modern geometry, this bike is ready for all your gravel ambitions.
What it's built for
Gravel riding, bikepacking, fast training sessions and long mixed-surface adventures.
Highlights
- Topstone carbon frame with Kingpin suspension and downtube StashPort storage
- Shimano GRX 1x12 drivetrain with excellent range and precise shifting
- WTB ST i25 TCS wheels with WTB Resolute 42c tubeless-ready tires
- Cannondale C1 Conceal stem and flared handlebar for improved control
Product Specifications
Chassis
| Frame: |
Topstone carbon frame, Kingpin suspension system, downtube Stashport, internal cable routing, BSA threaded housing, 142x12
Speed Release thru axle, flat mount rear brake, detachable fender mounts, bottle cage mounts, compatible with height adjustable
seat posts, UDH derailleur hanger |
| Fork: |
Topstone carbon, 12x100mm Speed Release thru axle, internal cable routing, 1-1/8" – 1.5" tapered steerer, gear/rack/fender
mounts |
| Shock: |
- |
Drivetrain & Brakes
| Shifters: |
Shimano GRX (ST-RX610), 1 x 12-speed |
| Rear Derailleur: |
Shimano GRX (RD-RX822), Shadow SGS |
| Front Derailleur: |
- |
| Crankset: |
Shimano GRX (FC-RX610), 46/30 teeth chain rings |
| Bottom Bracket: |
Shimano BSA 68 |
| Pedals: |
Not included (order here separately) |
| Chain: |
Shimano CN-HG M7100, 12-speed |
| Cogs: |
Shimano 105 (M7100), 12-speed, 11–36 teeth |
| Brakes: |
Shimano GRX (BR-GRX610), hydraulic disc brakes, 160mm discs (f/r) |
| Brake Levers: |
Shimano GRX (ST-RX610) |
Wheels
| Front Hub: |
Shimano TC500, 28 hole, 12 x 100mm thru axle |
| Rear Hub: |
Shimano TC500, 28 hole, 12 x 142mm thru axle |
| Rims: |
WTB ST i25 TCS, 28 hole, tubeless ready |
| Tires: |
WTB Resolute TCS Light, 700 x 42c, tubeless ready |
Components
| Stem: |
Cannondale C1 Conceal, aluminum |
| Handlebar: |
Cannondale 3, butted 6061 aluminum, 16° Flare Drop |
| Headset: |
Acros IS52/40 ICR |
| Saddle: |
Selle Royal SRX Open |
| Seatpost: |
Cannondale 3, 6061 aluminum, 27.2 x 350mm |
| Others: |
- |
Size Recommendation & Availability
Note: size ranges can overlap — in this case, personal preference applies. We are happy to advise you.
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