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One chainring, endless possibilities. The Topstone 3 GRX - 1x delivers simplicity without sacrificing performance. A Shimano GRX610/820 blended group keeps shifting precise and reliable, while KingPin suspension takes the sting out of rough terrain. WTB tires keep you connected to the trail, making every ride a good one—whether it’s a quick lap or a full-day escapade.
FEATURES
SPECIFICATIONS
| Frame |
Topstone Carbon, Kingpin suspension system, Proportional Response construction, downtube Stashport, internal cable routing, 12x142mm thru-axle, 27.2 dropper post ready, UDH, BSA 68mm threaded BB, flat mount disc, removable fender bridge, 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, triple bottle/gear mounts, fender mounts |
| Headset | Acros IS52/40 ICR |
| Stem |
Cannondale C1 Conceal, Alloy, 31.8, -6°: 70mm (47-51m), 80mm (54cm), 90mm (56-58cm), 100mm (61cm) |
| Handlebar |
Cannondale 3, butted 6061 Alloy, 16 deg flare, 120mm drop: 400mm (47cm), 420mm (51-54), 440mm (56-61cm) |
| Tape |
Cannondale KnurlCork, 2.7mm |
| Brakes |
Shimano GRX 610 hydraulic disc, 160/160mm RT70 rotors |
| Shifters |
Shimano GRX 610, 12-speed |
| Rear derailleur |
Shimano GRX 822, Shadow SGS |
| Cranks & chainrings |
Shimano GRX 610, 40T: 165mm (47cm), 170mm (51cm), 172.5 (54-56cm), 175mm (58-61cm) |
|
Bottom bracket
|
Shimano BSA 68 |
| Cassette |
Shimano SLX M7100, 10-51, 12-speed |
| Chain |
Shimano M7100, 12-speed |
| Rims |
WTB ST i25 TCS, 28h, tubeless ready |
| Front hub | Shimano TC500 | 12x100mm centerlock |
| Rear hub | Shimano TC500 | 12x142mm centerlock |
| Spokes | Stainless Steel 14g |
| Tires |
WTB Riddler TCS Light, 700x45c, tubeless ready |
| Seatpost |
Cannondale 3, 6061 Alloy, 27.2x350mm |
| Saddle |
Selle Royal SRX Open |
| Extra 1 | Large StashBag downtube storage bag, tubeless valve stems |
| Color |
Moonrock |
| Weight | N/A |
