When describing a fat bike, you wouldn’t typically describe it as agile. That’s where the Voytek is different. Otso 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.
THE Q-FACTOR IS THE KEY
The Voytek has the narrowest Q-factor of any fat bike in the world at 83mm. 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.
ONE BIKE, THREE WHEELBASE LENGTHS
The 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.
PLUS OR FAT? FAT OR PLUS?
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.
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.
COMPETITOR TESTED, ISO APPROVED
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.
|Recommended rider height||4'9"-5'5"||5'4-5'9"||5'8"-6'1"||6'0"-6'7"|
|Recommended rider inseam||29"-32"||31"-33"||32"-35"||34"-37"|
|Effective top tube||585mm||610mm||630mm||645mm|
|Nominal head tube angle (rigid and 100mm suspension fork)||69°||69°||69°||69°|
|Nominal head tube angle (120mm suspension fork)||68.5°||68.5°||68.5°||68.5°|
|Tuning Chip induced head/seat tube angle change||±0.2°||±0.2°||±0.2°||±0.2°|
|Head tube length||90mm||115mm||130mm||150mm|
|Nominal seat tube angle||73°||73°||73°||73°|
|Seat tube length||381mm||432mm||483mm||533mm|
|Bottom bracket drop||58-62mm||58-62mm||58-62mm||58-62mm|
|Rigid fork axle to crown length||485mm||485mm||485mm||485mm|
|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|
|Hubs||Sun Ringle hubs|
|Tires||45NRTH Dillinger 4 27.5 x 4.0 60 TPI Custom Studdable|
|Crankset||Race Face Aeffect 83mm with 175mm crankarms and custom offset Wolf Tooth CAMO system, 32T chainring (size Small frame ships with 170mm crankarms, 170mm crankarms are available on other sizes by request)|
|Chainwheel||Drop-Stop-ST / CAMO 32T Round Aluminum|
|Bottom Bracket||Race Face, PF107, Ø41mm|
|Chain||Shimano SLX 12-speed|
|Rear Derailleur||Shimano SLX M7100, 12-speed|
|Shifters||Shimano SLX M7100 Trigger, 12-speed|
|Handlebars||Race Face Ride 31.8 x 740mm 1" Rise|
|Tape/Grips||Wolf Tooth Fat Paw - Black|
|Stem||Aluminum - 80mm +/- 7 deg|
|Brake Levers||Magura MT-4|
|Saddle||Serfas SPR-2 Spartan-2 Performance Series Chromoly 145mm width|
|Seat Post||Aluminum 30.9|
|Seat Binder||34.9 / Black|
|Sizes||S, M, L, XL|
|Weight||25.4 lbs with rigid fork set up tubeless|
* Subject to change without notice.