Explore further. Ride freer.
An amazingly capable, versatile gravel road bike. Built for chasing horizons, exploring routes less travelled or accelerating your commute.
Model Description
Pure gravel goodness. With the smooth-riding SmartForm C2 Alloy frame, the precise shifting of Shimano’s upper tier GRX 2×12-speed gravel components, durable WTB rims and tires, and gear mounts galore, the Topstone 1 sets the standard for high performance versatility. Load up and head out.
What it’s for
Gravel-riding, exploring, bikepacking, performance commuting
Highlights
- Lightweight SmartForm C2 Alloy frame w/ full carbon fork
- Exceptionally precise and refined shifting from Shimano’s upper-tier mechanical GRX 820/600 2×12-speed gravel group
- Superb power and modulation from Shimano’s GRX 600/400 hydraulic disc brakes
- Rugged, reliable, WTB ST i23 TCS tubeless ready rims with Riddler 700x37c tires
- Long distance comfort from Fizik’s Aliante Delta saddle
Frameset
- Frame: Lightweight SmartForm C2 Alloy, 12×142 thru-axle, tapered headtube, BSA threaded BB, flat mount disc, StraightShot internal cable routing, multiple gear/bottle mounts.
- Fork: Topstone Carbon, 1-1/8″ to 1.5″ steerer, 55mm OutFront offset, flat mount disc, internal routing, 12×100 thru-axle, fender/gear mounts.
- Headset: Integrated, 1-1/8″ – 1.5″.
Drivetrain & Brakes
- Rear Derailleur: Shimano GRX 820, Shadow RD+.
- Front Derailleur: Shimano GRX 820, braze-on.
- Shifters: Shimano GRX 600, 12-speed.
- Crank: Shimano GRX 600, 46/30.
- Bottom Bracket: Shimano BSA 68.
- Chain: Shimano HG M7100, 12-speed.
- Rear Cogs: Shimano HG R7100, 11-34, 12-speed.
- Brakes: Shimano GRX 600 hydraulic disc, 160/160mm RT64 rotors.
Wheels & Tires
- Rims: WTB ST i23 TCS, 28h, tubeless ready.
- Hubs: (F) Formula cartridge bearing, 12x100mm centerlock / (R) Formula cartridge bearing, 12x142mm centerlock.
- Spokes: Stainless Steel, 14g.
- Tires: WTB Riddler TCS Light, 700x37c, tubeless ready (Europe/UK – Vittoria Terreno Dry, 700x35c, foldable).
Components & Finishing Kit
- Handlebar: Cannondale 3, butted 6061 Alloy, 16 deg flare drop.Widths: 400mm (XS), 420mm (SM-MD), 440mm (LG-XL).
- Stem: Cannondale 3, 6061 Alloy, 31.8, 7°.Lengths: 80mm (XS), 90mm (SM-MD), 100mm (LG-XL).
- Grips: Cannondale Bar Tape, 3.5mm.
- Saddle: Fizik Aliante Delta, S-alloy rails.
- Seatpost: Cannondale 3, 6061 Alloy, 27.2x350mm.
- Pedals: Not included.
General Info
- Sizes Available: XS, S, M, L, XL.





























































Reviews
There are no reviews yet.