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The ultimate all-round gravel bike to go anywhere and bring everything. The Topstone Carbon 3 GRX delivers simplicity without sacrificing performance.
Cancer and Reproductive Harm www.P65Warnings.ca.gov
The ultimate all-round gravel bike. Go anywhere, bring everything, and then keep on going. The Cannondale Topstone Carbon 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.
This innovative gravel rear suspension is light, simple, and effective. A thru-axle pivot in the seat tube allows the rear triangle and seatpost of the bike to flex vertically, delivering up to 30mm of bump-smoothing travel.
StashPort is a downtube storage system, accessed beneath the water bottle cage. Every bike includes StashBag, a specially designed bag for essentials.
The Topstone Carbon fits tires with a maximum measured width of up to **52mm for the frame** and **56mm for the rigid fork**. Lefty Oliver's tire clearance is optimized for a 700x47mm tire, with height being the primary limiting factor.
Built to accept an internally-routed 27.2mm dropper seatpost, which shouldn´t be a surprise on a bike this capable.
Tuned for the rider, this **size-specific construction** creates optimal stiffness and compliance for each frame size, so every rider benefits from the ideal ride feel and comfort of KingPin.
Confident stability meets nimble agility. An extra-long fork offset paired with a slack head angle keeps the steering light and lively, yet delivers unreal confidence at speed and in the rough stuff.
| Model Code | C15195U |
|---|---|
| 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 |
| Rear Derailleur | Shimano GRX 822, Shadow SGS |
| Shifters | Shimano GRX 610, 12-speed |
| Chain | Shimano M7100, 12-speed |
| Crank | Shimano GRX 610, 40T |
| Rear Cogs | Shimano SLX M7100, 10-51, 12-speed |
| Bottom Bracket | Shimano BSA 68 |
| Brakes | Shimano GRX 610 hydraulic disc, 160/160mm RT70 rotors |
| Brake Levers | Shimano GRX 610 hydraulic disc |
| Rims | WTB ST i25 TCS, 28h, tubeless ready |
| Spokes | Stainless Steel, 14g |
| Tire Size | 45 |
| Wheel Size | 700c |
| Front Hub | Shimano TC500, 12x100mm centerlock |
| Rear Hub | Shimano TC500, 12x142mm centerlock |
| Tires | WTB Riddler TCS Light, 700x45c, tubeless ready |
| Handlebar | Cannondale 3, butted 6061 Alloy, 16 deg flare drop |
| Stem | Cannondale C1 Conceal, Alloy, 31.8, -6° |
| Grips | Cannondale KnurlCork, 2.7mm |
| Saddle | Selle Royal SRX Open |
| Seatpost | Cannondale 3, 6061 Alloy, 27.2x350mm |
| Wheel Sensor | Cannondale Wheel Sensor |
| Extra | Large StashBag downtube storage bag, tubeless valve stems |
*Specs are subject to change without notice.
WARNING - INGESTION HAZARD: This product contains a button cell or coin battery. DEATH or serious injury can occur if ingested. A swallowed button cell or coin battery can cause Internal Chemical Burns in as little as 2 hours. KEEP new and used batteries OUT OF REACH OF CHILDREN. Seek immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body.
| Size | Height Range |
|---|---|
| 47 cm | 4'11" - 5'5" |
| 51 cm | 5'5" - 5'9" |
| 54 cm | 5'8" - 5'11" |
| 56 cm | 5'10" - 6'1" |
| 58 cm | 6'0" - 6'4" |
| 61 cm | 6'3" - 6'7" |
*These size ranges should be viewed only as a starting point. Everyone is built differently and the best way to determine the correct size is to test ride.
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