Topstone 1

Explore Further. Ride Freer.

An incredibly capable and versatile gravel bike, built for adventure—whether you're chasing new horizons, exploring unpaved routes, or accelerating your daily commute.

Where It Thrives

Gravel roads, off-the-beaten path, and beyond.

What It's Built For

Traction, handling, and all-day comfort.

Highlights

• Lightweight SmartForm C2 Alloy frame with a full carbon fork for responsive handling.
• Shimano GRX 820/600 12-speed drivetrain for smooth and reliable shifting.
• Shimano GRX 600/400 hydraulic disc brakes for confident stopping power in all conditions.
• WTB ST i23 TCS tubeless-ready rims paired with WTB Riddler 700x37c tires for grip and efficiency.

Adventure-Ready Performance

Straightforward, reliable, and packed with fun—the Topstone Alloy is designed for those who crave adventure and value versatility. Ride light and free or load it up for long hauls. With its confident handling, smooth ride, and go-anywhere capability, it's the perfect partner for any road, anywhere.

Wide-Ranging Capabilities

Clearance for up to 45mm tires allows you to take on rougher terrain with enhanced grip and comfort.

Specifications

Frameset

• Frame: Topstone SmartForm C2 Alloy, 12x142mm thru-axle, tapered headtube, BSA threaded BB, flat-mount disc, internal cable routing, multiple gear/bottle mounts.
• Fork: Topstone Carbon, 12x100mm thru-axle, 55mm OutFront offset, flat-mount disc, internal routing, 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.
• Crankset: Shimano GRX 600, 46/30T.
• Cassette: Shimano HG R7100, 11-34T, 12-speed.
• Chain: Shimano HG M7100, 12-speed.
• Bottom Bracket: Shimano BSA 68.

Brakes

• Brakes: Shimano GRX 400 hydraulic disc, 160mm rotors.
• Brake Levers: Shimano GRX 600 hydraulic disc.

Wheels & Tires

• Rims: WTB ST i23 TCS, 28h, tubeless-ready.
• Hubs: Formula cartridge bearings, 12x100mm (F) / 12x142mm (R), centerlock.
• Tires: WTB Riddler TCS Light, 700x37c, tubeless-ready.

Cockpit & Components

• Handlebar: Cannondale 3, butted 6061 Alloy, 16° flare drop.
• Stem: Cannondale 3, 6061 Alloy, 31.8mm, 7°.
• Grips: Cannondale Bar Tape, 3.5mm.
• Saddle: Fizik Aliante Delta, S-Alloy rails.
• Seatpost: Cannondale 3, 6061 Alloy, 27.2x350mm.

Extras

• Included: Tubeless valve stems.
  (Note: Component specifications may vary based on availability.)