Topstone 1 *

Topstone 1: Explore Further. Ride Freer.

The Topstone 1 is an incredibly capable and versatile gravel bike, designed to chase horizons, explore less-traveled routes, and elevate your daily commute. Built with a lightweight SmartForm C2 Alloy frame and equipped with Shimano's GRX 12-speed gravel-specific components, this bike is crafted for adventure seekers and riders looking for reliable, confident handling in all conditions.

Where it Thrives:

• Gravel roads
• Out in the elements

What It's Built For:

• Traction
• Handling
• Comfort

Highlights:

• Lightweight SmartForm C2 Alloy frame with full carbon fork for superior handling and comfort.
• Shimano GRX 820/600 12-speed drivetrain for precise and reliable shifting.
• Shimano GRX 600/400 hydraulic disc brakes for excellent stopping power.
• WTB ST i23 TCS tubeless-ready rims with WTB Riddler 700x37c tires for traction on any surface.

Wide-Ranging Capabilities: With clearance for up to 45mm tires, the Topstone 1 lets you push further into rough terrain while providing more grip and comfort for all your rides.

Specifications:

Frameset:

• Frame: Topstone, SmartForm C2 Alloy, 12x142 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, 12x100 thru-axle, fender/gear mounts.
• Headset: Integrated, 1-1/8" - 1.5".

Drivetrain:

• Rear Derailleur: Shimano GRX 820, Shadow RD+ for smooth shifting and chain stability.
• Front Derailleur: Shimano GRX 820 for efficient and reliable performance.
• Shifters: Shimano GRX 600, 12-speed for precise gear changes.
• Chain: Shimano HG M7100, 12-speed for smooth power transfer.
• Crankset: Shimano GRX 600, 46/30 for optimal gearing on varied terrain.
• Rear Cogs: Shimano HG R7100, 11-34, 12-speed for a wide gear range.
• Bottom Bracket: Shimano BSA 68 for reliability and durability.

Brakes:

• Brakes: Shimano GRX 400 hydraulic disc brakes with 160/160mm RT64 rotors for confident stopping power.
• Brake Levers: Shimano GRX 600 hydraulic disc for responsive braking control.

Wheels & Tires:

• Rims: WTB ST i23 TCS, 28h, tubeless ready for strength and lightness.
• Tires: WTB Riddler TCS Light, 700x37c, tubeless-ready (Europe/UK version comes with Vittoria Terreno Dry, 700x35c).
• Hubs: Formula cartridge bearing, 12x100mm front, 12x142mm rear for smooth rolling and durability.

Cockpit & Components:

• Handlebar: Cannondale 3, butted 6061 Alloy, 16-degree flare drop for comfort and control.
• Stem: Cannondale 3, 6061 Alloy, 31.8, 7° for stability.
• Grips: Cannondale Bar Tape, 3.5mm for comfort on long rides.
• Saddle: Fizik Aliante Delta, S-alloy rails for comfort and support.
• Seatpost: Cannondale 3, 6061 Alloy, 27.2x350mm for durability and adjustability.

Extras:

• Tubeless valve stems included.

The Topstone 1 offers excellent value and capability for gravel riders, adventurers, and commuters alike. Whether you're tackling rough terrain or smooth pavement, the Topstone 1 is your perfect partner for every ride.