Topstone 2

Core Identity

• Platform: Topstone Alloy
• Model Name: Topstone 2
• Model Code: C15702U

Frameset

• Frame: Lightweight SmartForm C2 Alloy, $12 \times 142\text{mm}$ thru-axle, tapered headtube, BSA threaded BB, flat mount disc, StraightShot internal cable routing, multiple gear/bottle mounts.
• Fork: Topstone Carbon, $1\text{-}1/8"$ to $1.5"$ steerer, 55mm OutFront offset, flat mount disc, internal routing, $12 \times 100\text{mm}$ thru-axle, fender/gear mounts.
• Headset: Integrated, $1\text{-}1/8" \text{ to } 1.5"$.

Drivetrain

• Rear Derailleur: Shimano GRX 400, Shadow RD+.
• Front Derailleur: Shimano GRX 400.
• Shifters: Shimano GRX 400, 10-speed.
• Crank: FSA Omega AGX+ Alloy, 46/30.
• Rear Cogs: Shimano HG500, 11-34, 10-speed.
• Chain: KMC X10, 10-speed.
• Bottom Bracket: FSA Cartridge.

Brakes

• Brakes: Shimano GRX 400 hydraulic disc.
• Rotors: 160/160mm RT54 centerlock.
• Brake Levers: Shimano GRX 400 hydraulic disc.

Wheels & Tires

• Rims: WTB ST i23 TCS, 28h, tubeless ready.
• Tires: WTB Riddler, $700 \times 37\text{c}$ (Note: Europe/UK models may ship with Vittoria Terreno Dry).
• Hubs: (F) Formula cartridge bearing, $12 \times 100\text{mm}$ / (R) Formula cartridge bearing, $12 \times 142\text{mm}$.
• Spokes: Stainless Steel, 14g.

Components

• Handlebar: Cannondale 3, butted 6061 Alloy, $16^\circ$ flare drop.
• Stem: Cannondale 3, 6061 Alloy, $31.8\text{mm}$, $7^\circ$.
• Grips: Cannondale Bar Tape, 3.5mm.
• Saddle: Fizik Aliante Delta, S-alloy rails.
• Seatpost: Cannondale 3, 6061 Alloy, $27.2 \times 350\text{mm}$.

Extras

• Included: Removable fender bridge.