The ultimate 650B bikepacking tire is designed for rides where you don’t know what lies ahead. Umtanum Ridge a steep and lonesome ridge in the central Cascade Mountains. It is so remote that European settlers never renamed it, and it carries its ancestral Native American name to this day.

Road.cc awarded the Umtanum Ridge their coveted ‘Recommended Tyre’ badge and commented: “Fat, supple tyre for all manner of off-road use, and fast and quiet on-road.”

The Umtanum Ridge’s large and widely spaced knobs grip tenaciosly when conditions get tough. On pavement, it rolls and corners like a slick thanks to its large and strategically placed knobs that don’t squirm and always put the same amount of rubber on the road. The Umtanum Ridge features our noise cancellation technology: The staggered tread blocks create overlapping noise frequencies that partially cancel each other. This means that on most surfaces, the Umtanum Ridge doesn’t just roll as fast as a slick – it’s also as quiet as a slick.

The Endurance Plus casing provides the ultimate in sidewall protection for extremely tough conditions.

The Umtanum Ridge is tubeless-compatible.

Technical Specs

Clincher, folding bead
ISO size: 55 - 584 mm
Tubeless-compatible
Recommended rim: 19 - 30 mm (inner width), hookless or with hooks
Maximum pressure with tubes: 55 psi (3.8 bar)
Maximum recommended pressure – tubeless: 55 psi (3.8 bar)
Actual width on 21 mm rim (internal): approx. 56 mm
Actual width on 23 mm rim (internal): approx. 57 mm
Tubeless: +0.5 mm width
Made in Japan

Endurance Plus casing

Extra-tough casing with ultra-strong threads
Protective belt under sidewalls and tread
The ultimate in sidewall protection
Dark tan sidewalls
625 g