All details on Availability & Size Recommendation can be found below the product specifications.
October offer: free VOXOM pedals! Order any Topstone CAAD by 31 October 2026 and get a pair of VOXOM pedals for free. Just add them to your cart and the price is set to €0 automatically. One pair per bike.
Less fuss, more miles
The Topstone CAAD 1 GRX 1x pairs the Topstone CAAD alloy frame with a Shimano GRX 1x12 drivetrain. One chainring, a huge gear range and nothing to get in the way off-road: ideal for riders who want to spend plenty of time on gravel.
Model Description
The SmartForm C1 alloy frame with carbon fork features internal cable routing, UDH and lots of mounts for bags, bottles, a rack and fenders. The GRX 822 rear derailleur with Shadow chain management and the 10-51 cassette keep the chain quiet and offer easy gears even on steep, loose ramps. Hydraulic GRX disc brakes, WTB ST i25 rims and 45 mm WTB Vulpine tires roll well on pavement and grip on gravel.
What it’s built for
Gravel rides and off-road loops, bikepacking, long days on dirt roads and demanding climbs
Highlights
- SmartForm C1 alloy frame with Topstone carbon fork, internal cable routing, UDH and plenty of mounts
- Shimano GRX 1x12 drivetrain with 40T chainring and 10-51 cassette for a huge gear range
- Shimano GRX hydraulic disc brakes with 160 mm Centerlock rotors
- WTB Vulpine TCS Light 45c tubeless tires on WTB ST i25 rims
Product Specifications
Chassis
| Frame: | Topstone CAAD frame, SmartForm C1 alloy, StraightShot internal cable and dynamo routing, 12x142mm thru-axle, 27.2 dropper post ready, 1.5" headtube (Acros compatible), UDH derailleur hanger, BSA 68mm threaded BB, flat mount disc (160mm), 18mm two-bolt kickstand mount, rack & fender mounts, multiple gear & bottle mounts, suspension-ready geometry |
|---|---|
| Fork: | Topstone carbon, 1-1/8" to 1.5" tapered steerer, 55mm OutFront offset, flat mount disc, internal cable and dynamo routing, 12x100mm thru-axle, triple bottle/gear mounts, fender mounts |
| Shock: | - |
Drivetrain & Brakes
| Shifters: | Shimano GRX 610, 12-speed |
|---|---|
| Rear Derailleur: | Shimano GRX 822, Shadow SGS, 12-speed |
| Front Derailleur: | - |
| Crankset: | Shimano GRX 610, 40T, 165mm (47), 170mm (51), 172.5mm (54–56), 175mm (58–61) |
| Bottom Bracket: | Shimano BSA 68 |
| Pedals: | Not included (order here) |
| Chain: | Shimano HG 7100, 12-speed |
| Cassette: | Shimano SLX M7100, 10–51T, 12-speed |
| Brakes: | Shimano GRX 410 hydraulic disc brakes, 160/160mm RT64 Centerlock rotors (f/r) |
| Brake Levers: | Shimano GRX 610 hydraulic disc |
Wheels
| Front Hub: | Shimano TC500, 12x100mm, Centerlock disc mount |
|---|---|
| Rear Hub: | Shimano TC500, 12x142mm, Centerlock disc mount, Micro Spline driver |
| Rims: | WTB ST i25 TCS 2.0, 28H, tubeless ready, stainless steel spokes (14g) |
| Tires: | WTB Vulpine TCS Light, 700x45c, tubeless ready |
Components
| Stem: | Cannondale C1 Conceal, alloy, 31.8mm, -6°, 70mm (47–51) / 80mm (54) / 90mm (56–58) / 100mm (61) |
|---|---|
| Handlebar: | Cannondale 3, 6061 alloy, 16° flare, 120mm drop, 400mm (47–51) / 420mm (54–58) / 440mm (61) |
| Headset: | Acros IS52/40 ICR |
| Saddle: | Selle Royal SRX Open, 145mm |
| Seatpost: | Cannondale 3, 6061 alloy, 27.2x350mm |
| Others: | Cannondale KnurlCork bar tape (2.7mm), Conceal stem accessory/computer mount (Garmin/Wahoo/Hammerhead), tubeless valves |
| Model year | 2027 |
| Intended use | Gravel |
| Wheel size | 28" |
| Frame material | Aluminum |
| Shifting type | Derailleur |
| Gears | 12 |
