All details on Availability &
Size Recommendation can be found below the product specifications.
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
47
1 week delivery time
149 cm
167 cm
149–167 cm
51
1 week delivery time
165 cm
175 cm
165–175 cm
54
in stock
172 cm
180 cm
172–180 cm
56
in stock
177 cm
185 cm
177–185 cm
58
in stock
182 cm
193 cm
182–193 cm
61
1 week delivery time
190 cm
200 cm
190–200 cm
Note: size ranges can overlap — in this case, personal preference applies. We are happy to advise you.
Series Video
| Model year | 2025 |
| Intended use | Gravel |
| Wheel size | 28" |
| Frame material | Carbon |
| Shifting type | Derailleur |
| Gears | 24 |
