An Ye Harm None, Do What Ye Will

The Ouroboros is an all-new platform from the unbound minds at Kona. We bring you three builds– each meant for its own incredibly rowdy ride to the ends of the earth and back. Pack it expertly for the long haul, nimbly explore the edges of singletrack, or complete multiple days of the most wonderfully weird and delightfully chaotic of events. While other gravel bikes may technically tolerate mountain bike components, the Ouroboros is intentionally designed around the rowdy stuff – like 180mm rotors, 2.1 tire clearance, and front suspension, giving you a ride feel that is otherworldly and almost mistakable for a modern trail bike.


Unmatched in ride quality and capability, the Supreme lives up to its name by turning every head it passes – beckoning to those who want nothing holding them back. Remote shifting and dropper? Check. Carbon wheels? Check. 40mm of high-performance front suspension? Oh yeah. You read that right.
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An absolutely stunning gravel bike for those who seek a more traditional look and feel. This creation prioritizes lightweight features and adheres to the sacred and long-established characteristics of a drop bar bike. We’ve thoughtfully spec’d gear steps that are closer together to help you maintain your ideal cadence. With that sweet spot so easy to find, you won’t lose your rhythm – no matter your load or speed.
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Whether you’re a gravel-loving mountain biker or a mountain-bike-loving gravel biker, the Ouroboros Carbon is the lure to catch the attention of both. We’ve made sure each coin spent is met with corresponding value in shred performance. The Ouroboros Carbon is meant for big things, so we put big things on it – like fat tires, large rotors, a mountain standard dropper post width, and a low, yet wide gear range. Hop on and let the journey unfold. Notify me when available Go to bike page


Designing a Sigil


5 Frame Mounting Points
Located in the front triangle, these boss mounts allow for limitless custom frame bag options devoid of straps.

Wider tire Clearance
In the never-ending quest to run slightly wider tires just because we said you can, we’ve broadened the horizons of the rubber fitment journey. Run a 29 x 2.5 front tire with the carbon rigid fork or run a 700 x 50mm front tire with a Fox or RockShox 40mm suspension fork.


69.5 Headtube Angle
Slacker than gravel, steeper than modern trail mountain bikes, we chose this angle for a reason. This angle keeps enough weight on the front wheel to keep things snappy on slappy singletrack, yet relaxed enough to not send you kissing the front tire when things get beguiling.

31.6mm Seatpost
This. This is a moment of genuine intention. Look past the typical 27.2mm dropper posts and you’ll see it. As hardcore riders designing for hardcore rides, we know how the longevity of a dropper is crucial when you’re deep in those backcountry moments – only a proper 31.6mm seat post can ensure riders are able to choose what keeps them going for the long haul.


Imperial - inches
SIZE 48 50 52 54 56 58
REACH 15.0 15.2 15.4 15.6 15.7 15.9
STACK 22.0 22.6 23.2 24.0 24.8 26.0
HTA 69.5
HTL 4.5 5.2 5.8 6.8 7.6 8.9
STA 75° 74.5° 74° 73.5° 73° 72.5°
STL 16.1 16.1 17.9 17.9 19.7 21.1
CSL 17.5
BBD 3.0 3.0 3.0 2.8 2.8 2.8
WHEELBASE 41.7 42.1 42.5 43.1 43.5 44.2
FRONT CENTER 24.6 25.0 25.4 25.9 26.4 27.0
FORK C-A 16.5
TTL 20.9 21.4 22.0 22.7 23.3 24.1

*All specifications are subject to change without notice


Ouroboros Supreme
Frame Material Kona Carbon
Sizes 48, 50, 52,54, 56, 58
Rear Shock n/a
Fork RockShox Rudy Ultimate XPLR, Charger Race Day, 40mm travel, tapered, 100 x 12
Crankarms SRAM Force 1 DUB Wide
Chainrings SRAM Force 1 Wide 40t X-Sync, direct mount
B/B SRAM Press-Fit 86.5 DUB Wide
Pedals n/a
Chain SRAM X0 Eagle Transmission Flattop
Cassette SRAM XO Eagle Transmission 10-52t, XD
Chainguide n/a
F/D n/a
R/D SRAM XO Eagle Transmission
Shifters SRAM Force ETAP AXS
Brake Calipers SRAM Force Hydraulic
Front Brake Rotor SRAM Centerline Centerlock 180mm
Rear Brake Rotor SRAM Centerline Centerlock 180mm
Brake Levers SRAM Force ETAP AXS
Headset FSA Orbit No. 57, ZS 44/56
Handlebar Ritchey Venturemax WCS/Venturemax XL WCS, 24-degree flare, 4.6-degree backsweep, 48-50: 460mm; 52-54: 480mm; 56: 500mm; 58: 520mm
Stem Ritchey Trail WCS, 0-degree, 48-52: 45mm; 54-58: 60mm
Seatpost RockShox Reverb AXS 31.6mm, 48-50: 100mm travel; 52-58: 125mm travel
Seat Clamp Kona 34.9mm
Grips Smanie Elite bar tape
Saddle WTB Volt Medium Stainless Fusion
Front Hub Zipp 101 XPLR
Rear Hub Zipp 101 XPLR
Spokes Zipp 101 XPLR
Rims Zipp 101 XPLR, 27mm internal width, tubeless, carbon, with tubeless tape
Front Tire Maxxis Ravager 700 x 50mm TR EXO
Rear Tire Maxxis Ravager 700 x 50mm TR EXO
Paint Color Gloss Midnight w/ RS Kwiqsand Decals
Extras batteries

*All specifications are subject to change without notice