








Cannondale Topstone Carbon 3 GRX 1x 2026 Moonrock
C15355U3054
CANNONDALE TOPSTONE CARBON 3 GRX - 1X
One chainring, endless possibilities. The Topstone 3 GRX comes with 1x, a simple option that does not sacrifice performance. The drivetrain is a precise combination of Shimano GRX610/820, while the KingPin suspension smooths the terrain. WTB tires keep you connected to the trail, so you can enjoy every ride, whether a quick loop or an all-day adventure.
Ready for Anything
Our version of the ultimate gravel bike. Go anywhere, carry everything you want, and keep moving forward.
- WHAT IT'S FOR:
Recreational and competitive gravel, bikepacking, pushing your limits or touring, on dirt or asphalt.
- KEY POINTS:
- Lightweight carbon frame kit, with Kingpin rear suspension, Proportional Response construction specific to each size, and StashPort storage in the downtube.
- The combination of Shimano high-end gravel groups, with a GRX820 and a GRX610, delivers exceptional performance with a single chainring and a wide-range 12-speed SLX cassette.
- WTB ST i25 rims, strong and reliable, with Shimano hubs and WTB Riddler 45c gravel tires.
- Cannondale 3 flare handlebars offering comfortable hand positions.
Smiles per Kilometer
The Kingpin is our lightest and most robust rear suspension. Very simple and maintenance-free, it provides the Topstone frame with true rear wheel travel without compromising responsiveness in the most aggressive accelerations. Kingpin provides comfort and traction, allowing you to pedal harder knowing that bumps on technical sections are absorbed. So discreet it goes unnoticed visually, but with real benefits and results.
Carry Your Gear
Our new StashPort storage system in the downtube is designed to remain hidden while fully functional. Together with the special StashBag, you can carry your essentials knowing they are well protected, whatever you do. Meanwhile, the multiple mounting points on the frame allow you to attach more accessories and experience new adventures.
Optimal Performance
Path response, adapted to you. Thanks to the concept known as Proportional Response, everything on the Topstone, from the carbon layup to the geometry, is precisely adapted to each frame size. This ensures the bike’s response – including the KingPin suspension – works in harmony with your weight and size, providing the best experience on the trail.
Built to Endure. Adapted to You.
The Proportional Response concept of the SuperX carbon frame is aimed at gravel competitions and designed to fit you. The frame is size-specific. Layers of different types and modules of carbon fiber are precisely oriented to offer an ideal balance between weight, stiffness, and durability for rider size and reach. Backed by our lifetime warranty.
Enter the Mud Madness
Love cyclocross? The SuperX has you covered. Put on 33c tires and you’re ready. With top speed, stability, and plenty of mud clearance, the SuperX can handle the muddiest races. And by the way, the flat top tube will delight you when you carry it on your shoulder.
*KingPin*
Our innovative gravel rear suspension is light, simple, and effective. A thru-axle pivot in the seat tube allows the rear triangle and seatpost to flex vertically, providing up to 30mm of travel to smooth bumps.
*StashPort + StashBag*
StashPort is our version of a downtube storage system accessed under the bottle cage. Every bike includes a StashBag, a specially designed bag to carry essentials.
*Tire Clearance*
Plenty of room for modern gravel tires. The frame accommodates up to 52 mm wide tires with a 1x setup, or 50 mm for a 2x setup, while the fork accommodates tires up to 56 mm wide. Measured size, of course.
*Dropper Post Compatible*
The frame accepts a 27.2 mm diameter dropper post with internal cable routing, which shouldn’t be a surprise on a bike of this capability.
*Proportional Response*
Tailored to the rider, our size-specific construction creates optimal stiffness and compliance for each frame size. So every rider benefits from the ideal ride feel and KingPin comfort.
*OutFront Steering Geometry*
Stability and agility in one. An extra-long fork offset combined with a slack head tube angle provides light and nimble steering response, yet unmatched stability at speed and on difficult terrain.
*All Tidy*
Internal cable routing throughout the frame, combined with the Conceal stem, keeps cables neatly inside with exceptional aesthetics.
Pairs well with
Fast and secure delivery
Personalised advice
2-year warranty
Hassle-free returns

Cannondale Topstone Carbon 3 GRX 1x 2026 Moonrock
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Product details
General
- Year
- 2026
- Gender
- Unisex
- Family
- Bicis
- Wheel size
- 700
Frame
- 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
Cockpit
- Handlebars
- Cannondale 3, butted 6061 Alloy, 16 deg flare, 120mm drop: 400mm (47cm), 420mm (51-54), 440mm (56-61cm)
- Stem
- Cannondale C1 Conceal, Alloy, 31.8, -6°: 70mm (47-51m), 80mm (54cm), 90mm (56-58cm), 100mm (61cm)
- Grips
- Cannondale KnurlCork, 2.7mm
Brakes
- Front brake
- Shimano GRX 610 hydraulic disc, 160/160mm RT70 rotors
- Rear brake
- Shimano GRX 610 hydraulic disc, 160/160mm RT70 rotors
- Brake levers
- Shimano GRX 610 hydraulic disc
Saddle
- Saddle
- Selle Royal SRX Open
- Seatpost
- Cannondale 3, 6061 Alloy, 27.2x350mm
Drivetrain
- Shift levers
- Shimano GRX 610, 12-speed
- Rear derailleur
- Shimano GRX 822, Shadow SGS
- Cassette
- Shimano SLX M7100, 10-51, 12-speed
- Chain
- Shimano M7100, 12-speed
- Crankset
- Shimano GRX 610, 40T: 165mm (47cm), 170mm (51cm), 172.5 (54-56cm), 175mm (58-61cm)
- Bottom bracket
- Shimano BSA 68
- Pedals
- Not included
- Speeds
- 12
Wheels
- Front tire
- WTB Riddler TCS Light, 700x45c, tubeless ready
- Rear tire
- WTB Riddler TCS Light, 700x45c, tubeless ready
- Rims
- WTB ST i25 TCS, 28h, tubeless ready
- Front hub
- (F) Shimano TC500, 12x100mm centerlock
- Rear hub
- (R) Shimano TC500, 12x142mm centerlock
- Spokes
- Stainless Steel, 14g