Explore further. Ride freer. Read more
An amazingly capable, versatile gravel road bike. Built for chasing horizons, exploring routes less travelled or accelerating your commute.
Straightforward, reliable and a whole hell of a lotta fun, the Topstone Alloy is a gravel bike crafted for those with a taste for adventure – and value. Roll light and free, or load it up for a long haul, Topstone’s comfortable ride, confident handling and up-for-anything capability make it the perfect partner on any road, anywhere.
Wide Ranging Capabilities
Clearance for big 45mm tires lets you push further into the rough stuff, and enjoy more grip and comfort on every ride.
Highlights
- Lightweight SmartForm C2 Alloy frame w/ full carbon fork
- Shimano GRX 820/600 12-speed gravel group
- Shimano GRX 600/400 hydraulic disc brakes
- WTB ST i23 TCS tubeless ready rims with Riddler 700x37c tires
SPECIFICATIONS
Frameset
Frame - Topstone, lightweight SmartForm C2 Alloy, 12x142 thru-axle, tapered headtube, BSA threaded BBm 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, 12x100 thru-axle, fender/gear mounts
Headset - Integrated, 1-1/8" - 1.5"
Drivetrain
Rear Derailleur - Shimano GRX 820, Shadow RD+
Front Derailleur - Shimano GRX 820
Shifters - Shimano GRX 600, 12-speed
Chain - Shimano HG M7100, 12-speed
Crank - Shimano GRX 600, 46/30
Rear Cogs - Shimano HG R7100, 11-34, 12-speed
Bottom Bracket - Shimano BSA 68
Brakes
Brakes - Shimano GRX 400 hydraulic disc, 160/160mm RT64 rotors
Brake Levers - Shimano GRX 600 hydraulic disc
Wheels
Rims - WTB ST i23 TCS, 28h, tubeless ready
Spokes - Stainless Steel, 14g
Tire Size - 37
Wheel Size - 700
Hubs - (F) Formula cartridge bearing, 12x100mm centerlock / (R) Formula cartridge bearing, 12x142mm centerlock
Tires - WTB Riddler TCS Light, 700x37c, tubeless ready
Components
Handlebar - Cannondale 3, butted 6061 Alloy, 16 deg flare drop
Stem - Cannondale 3, 6061 Alloy, 31.8, 7°
Grips - Cannondale Bar Tape, 3.5mm
Saddle - Fizik Aliante Delta, S-alloy rails
Seatpost - Cannondale 3, 6061 Alloy, 27.2x350mm
Extra - Tubeless valve stems