Kona Ouroboros Supreme - 2025, 54 cm

2025 Kona Ouroboros Supreme — 54cm — Carbon Gravel Bike w/ Zipp 303 XPLR & SRAM X0 T-Type AXS

The Kona Ouroboros Supreme is Kona’s ultimate gravel race machine — engineered for speed, comfort, and versatility on rough terrain. This top-spec build combines SRAM X0 Eagle Transmission (T-Type AXS wireless shifting), RockShox Rudy Ultimate suspension fork, and Zipp 303 XPLR carbon wheels, making it an elite-level setup for riders who demand performance on everything from fast-packed gravel to rugged backcountry routes.

Key Specs

 • Frame/Material: Kona Ouroboros Supreme, carbon (54cm)

 • Weight: 19 lb

 • Groupset: SRAM X0 Eagle Transmission T-Type AXS, 1x12

 • Crankset: SRAM Force 172.5mm, 40T X-Sync direct mount

 • Cassette: SRAM XO Eagle 10–52T XD

 • Brakes: SRAM Force hydraulic disc

 • Fork: RockShox Rudy Ultimate XPLR, 40mm travel

 • Seatpost: RockShox Reverb AXS dropper, 31.6mm

 • Wheels: Zipp 303 XPLR SW carbon, tubeless-ready

 • Tires: Maxxis Ravager 50C

 • Cockpit: Ritchey Trail WCS 45mm stem, Ritchey Venturemax WCS 480mm carbon handlebar

 • Saddle: WTB

 • Fit Range: best for riders ~5’8”–6’0”

 • MSRP: $9,500 (with upgrades)

 • Charger: included

Condition

 • Pre-Owned: Low miles, excellent mechanical shape.

 • Mechanic Inspected: Fully serviced, ride-ready. Minor cosmetic signs from regular gravel use.

Why We Love It

This bike is the definition of modern gravel performance: wireless shifting, dropper post, suspension fork, and Zipp’s legendary carbon wheels. The Ouroboros Supreme strikes the perfect balance between race-day efficiency and adventure-ready durability, making it an unstoppable choice for demanding gravel riders.