All details on availability & size recommendation can be found below the specification.
Discover new adventures. Discover freedom.
An amazingly capable and versatile gravel bike. Built to explore horizons, discover less-traveled routes, or speed up your daily commute.
Model Description
Pure gravel capability. With its smooth SmartForm C2 alloy frame, precise shifting from Shimano’s top-tier GRX 2x12 gravel components, robust WTB wheels and tires, and numerous mounting options, the Topstone 1 sets the standard for high-performance versatility. Load it up and head out.
What it’s for
Gravel riding, exploration, bikepacking, performance commuting
Key Features
- Lightweight SmartForm C2 alloy frame with full carbon fork
- Exceptionally precise mechanical Shimano GRX 820/600 2x12-speed drivetrain
- Powerful and well-modulated Shimano GRX 600/400 hydraulic disc brakes
- Durable WTB ST i23 TCS tubeless-ready rims with Riddler 700×37c tires
- Long-distance comfort with the Fizik Aliante Delta saddle
Specifications
Frameset
| Frame: | Lightweight Topstone SmartForm C2 alloy, flat mount disc, tapered head tube, 12x142 mm thru-axle, StraightShot internal routing, mounts for bottles & gear |
|---|---|
| Fork: | Topstone full carbon, 12x100 mm thru-axle, internal cable routing, 1-1/8"–1.5" tapered steerer, 55 mm offset |
| Rear Shock: | – |
Drivetrain & Brakes
| Shift Levers: | Shimano GRX ST-RX600, 2×12-speed |
|---|---|
| Rear Derailleur: | Shimano GRX RD-RX820, Shadow RD+ cage |
| Front Derailleur: | Shimano GRX FD-RX820-F, braze-on |
| Crankset: | Shimano GRX FC-RX600-2, 46/30T chainrings |
| Bottom Bracket: | Shimano BB-RS500, sealed |
| Pedals: | Not included (order here) |
| Chain: | Shimano CN-M7100, 12-speed |
| Cassette: | Shimano CS-HG710-12, 11-34T |
| Brakes: | Shimano GRX BR-RX400, hydraulic disc, 160 mm rotors (f/r) |
| Brake Levers: | Shimano GRX ST-RX600 |
Wheels
| Front Hub: | Formula, sealed bearings, 28h, 12x100 mm, Centerlock |
|---|---|
| Rear Hub: | Formula, sealed bearings, 28h, 12x142 mm, Centerlock |
| Rims: | WTB ST i23 TCS, 28h, tubeless ready |
| Tires: | WTB Riddler TCS Light, 700×37c, tubeless ready |
Components
| Stem: | Cannondale 3, 6061 alloy, ±7°, 31.8 mm clamp |
|---|---|
| Handlebar: | Cannondale 3, butted 6061 alloy, 16° flare |
| Headset: | Integrated, 1-1/8"–1.5" |
| Saddle: | Fizik Aliante Delta, alloy rails |
| Seatpost: | Cannondale 3, 6061 alloy, 27.2×350 mm |
| Extras: | – |
Availability & Size Recommendation
XS
sold out
147 cm
165 cm
147 – 165 cm
SM
in stock
160 cm
175 cm
160 – 175 cm
MD
in stock
170 cm
185 cm
170 – 185 cm
LG
approx. 1 week lead time
177 cm
193 cm
177 – 193 cm
XL
in stock
190 cm
203 cm
190 – 203 cm
Note: size ranges may overlap — rider preference decides. We’re happy to advise.
| Model year | 2025 |
| Intended use | Gravel |
| Wheel size | 28" |
| Frame material | Aluminum |
| Shifting type | Derailleur |
| Gears | 24 |
