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Otso The Radavist Voytek

Otso The Radavist Voytek
$2,396.25 - $4,280.00
$3,195.00 - $4,280.00
Color: The Radavist x Otso Cycles Collaboration
Size: Select size
Please select options Unavailable


We've partnered with our friends at The Radavist to bring this collaboration Voytek to life. It has all of the same features as the existing Voytek, but with this special colorway. It's ready for snowy adventures and desert touring alike. A portion of all proceeds will be donated to Protect Our Winters.

When describing a fat bike, you wouldn’t typically describe it as agile. That’s where the Voytek is different. We paired a narrow pedal stance—aka Q factor—with aggressive XC race geometry to build a fat bike that can intuitively handle snowy trails like your mountain bike can handle summer singletrack.

Angry Catfish's website is tied into Otso's available inventory. If you are visiting our store to view the bike, please contact us before coming, to ensure we have what you're looking for.

The Voytek has the narrowest Q-factor of any fat bike in the world at 183mm. With a narrow Q-factor, your weight is closer to the centerline of the bike. This is especially important when cornering because it allows for tight, responsive control—the wider Q-factor found on most fat bikes spreads out your pedals and creates a floppy, unstable feel. The frame was designed around an 83mm bottom bracket, where most fat bikes have a bottom bracket north of the 100-110mm range. With the Voytek, you don’t need to compromise agile handling to ride up to 4.6” tires.

Our Tuning Chip rear dropout is at the heart of the versatile Voytek. With a quick change in positions, the wheelbase of the Voytek can be extended or shortened by up to 20mm, which also changes bottom bracket height by up to 4mm. In the forward position, you’ve got an aggressive, responsive Voytek for your next race. In the rear position, you’ve got that same intuitive handling but with added stability to make it easier to ride in deep snow or adverse terrain. In the middle, well, that’s the best of both worlds.

We’re internally divided here as to whether the Voytek is a plus bike that can handle fat tires or if the Voytek is a fat bike that has the handling worthy of a plus bike. When the trails are packed with snow, we’re riding 4” tires. When spring comes and the trails turn to dirt, we swap out tires and ride plus until winter returns. The versatility of the Voytek blurs the lines of plus and fat, keeping the party going all year long.

The Voytek can run a wide range of wheel sizes: 27.5" or 29" plus MTB tires to 26" x 4.6" fat tires.

Voytek's longer top tube, short chainstays – the shortest in the world for a fat bike – and slightly slacker head tube angle mean more speed and more fun.

Voytek's suspension-corrected geometry is compatible with an Otso™ carbon rigid fork or up to 120 mm travel suspension fork.

Voytek's patent-pending frame design exceeds all ISO frame safety standards and has been proven over thousands of miles of test riding, including the legendary Iditarod Invitational and Arrowhead 135 competitions.

The EPS molded carbon frame of the Voytek was designed to accept internally routed dropper seat posts.


Frame Voytek™ patented carbon frame, Tuning Chip™ dropout system, 177x12 rear hub spacing, Plus-Fat Narrow Q-factor design with PF107BB, guided internal rear derailleur routing, accommodates internally routed dropper post, external brake routing, downtube and chainstay protectors, matching allow bottle cage bolts
Fork Voytek™ rigid carbon fork, suspension corrected, tapered steerer tube, 485mm axle-to-crown, 51mm offset
Headset Wolf Tooth Precision Headset, IS42/IS52
Rims/Wheels Sun Mulefut 27.5" 80mm with Sun Ringle hubs
Tires Terrene Cake Eater 27.5x4.0 Light Folding
Crankset Race Face Aeffect 175mm 83mm BB with WTC CAMO
Bottom Bracket Race Face, PF107, Ø41mm
Chain Shimano SLX 12-speed
Front Derailleur None, 1x only bike
Rear Derailleur Shimano SLX M7100, 12-speed
Rear Cogs Shimano SLX M7100, 10-51t, 12-speed
Shifters Shimano SLX M7100 Trigger, 12-speed
Handlebars Race Face Ride, 740mm riser
Tape/Grips Wolf Tooth silicone grips
Stem Race Face Ride (60mm standard. Other lengths available by request)
Brakes Magura MT4
Saddle WTB Volt
Seat Post Race Face Ride, 30.9mm
Weight 25.4 lbs with rigid fork set up tubeless

* Subject to change without notice.

Part Numbers

Option MPN Store SKU
The Radavist x Otso Cycles Collaboration / Small 210000089003 210000089003
The Radavist x Otso Cycles Collaboration / Medium 210000089004
The Radavist x Otso Cycles Collaboration / Large 210000089005
The Radavist x Otso Cycles Collaboration / X-Large 210000089006