The Kona Ouroboros CR is a carbon gravel bike built for riders who want mountain bike-inspired capability without sacrificing efficiency on long-distance gravel adventures. Designed around high-volume tires, a 40mm Fox suspension fork, a dropper post, and wide-range Shimano GRX/Deore gearing, it delivers confident handling and impressive versatility across rough backroads, technical gravel, and unpredictable terrain.

Features

• Lightweight Kona carbon frame engineered for demanding gravel and mixed-surface riding.
• Fox AX32 suspension fork with 40mm of travel helps smooth out rough roads, washboard sections, and trail features.
• Shimano GRX 820 drivetrain and controls paired with a wide-range 10-51T cassette for steep climbs and fast descents.
• TranzX dropper seatpost with a mountain bike standard 31.6mm diameter for added control on technical terrain.
• WTB Resolute 700x50c tires provide excellent traction, comfort, and stability on loose surfaces.
• Large 180mm Shimano brake rotors front and rear deliver strong stopping power in varied conditions.
• Tubeless-ready WTB KOM Team i27 rims support aggressive gravel riding and lower tire pressures.
• Progressive geometry blends gravel efficiency with the control and confidence of a modern trail bike.

Specs

Frame: Kona Carbon
Sizes: 48, 50, 52, 54, 56, 58
Rear Shock: n/a
Fork: Fox AX32 GRIP damper/ 40mm travel / Tapered / 12x100mm
Crankset: Shimano GRX 820 40t / Length 48-52 170mm / 52-54 172.5mm / 56-58 175mm
Bottom Bracket: Shimano PF86.5
Pedals: n/a
Chain: Shimano Deore M6100
Cassette: Shimano Deore M6100 10-51t 12spd
Chainguide: n/a
Front Derailleur: n/a
Rear Derailleur: Shimano RDRX822
Shifters: Shimano GRX 820
Brake Calipers: Shimano GRX 820
Front Brake Rotor: Shimano RT56 180mm 6B
Rear Brake Rotor: Shimano RT56 180mm 6B
Brake Levers: Shimano GRX 820
Headset: FSA Orbit No.57 ZS44/ZS56
Handlebar: Kona Gravel Dropbar 31.8mm / Width 48 440mm / 50 460mm / 52-54 480mm / 56 500mm / 58 520mm
Stem: Kona 31.8mm / Rise 6º / Length 48-52 50mm / 54-58 60mm
Seatpost: TranzX Dropper +RAD 31.6mm 125mm
Seat Clamp: Kona Clamp 34.9mm
Grips: Kona Cork Tape
Saddle: WTB Volt Medium
Front Hub: Formula 12x100mm
Rear Hub: Formula 12x142mm MS
Spokes: Stainless 2.0mm Black
Rims: WTB KOM Team i27 TCS 29"
Front Tire: WTB Resolute TCS Light 700x50mm
Rear Tire: WTB Resolute TCS Light 700x50mm
Paint Colour: Matte Carbon w/ Gloss Orchid Fade Decals
*All specifications are subject to change without notice.

Geometry