| Platform |
Topstone Alloy |
| Model Name |
Topstone 1 |
| Model Code |
C15603U |
| Frameset |
| Frame |
Topstone, lightweight 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+ |
| 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: 400mm (XS), 420mm (SM-MD), 440mm (LG-XL) |
| Stem |
Cannondale 3, 6061 Alloy, 31.8, 7°: 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 |
| Extra |
| Extra 1 |
Tubeless valves |
