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Otso Voytek 27.5"

Otso Voytek 27.5"
  • Color: Aqua
  • Color: Aqua
  • Color: Charcoal
  • Color: Charcoal
Please select options
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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.

Bottom bracket standard83mm (Press Fit 107)
Q-factor 183mm with Race Face Next SL crankset, 188mm with Race Face Aeffect crankset
Maximum chainring size 36T round or 34T oval
Front derailleur type None. 1x only bike.
Headset IS42 upper, IS52 lower
Seatpost diameter Ø30.9mm, accommodates internally routed dropper post
Seatpost clamp Ø34.9mm
Front/rear hub standard 150x15mm thru axle / 177x12mm thru axle
Front/rear axle Ø15x150mm, TP = 1.5, TL = 12mm / Ø12x216mm, TP = 1.5, TL = 14mm
Derailleur hanger Tuning Chip Right Dropout
Rear brake (rotor) 74mm post (160mm native, 180mm max)
Front brake (rotor) 74mm post (160mm native, 180mm max)
Fork axle-to-crown 485mm, suspension corrected to 100-120mm travel forks
Fork offset 51mm
Bare frame weight (size M) 1350g
Fork weight (Otso rigid fork) 650g
Tire clearance (frame) Up to 26" x 4.0" in forward Tuning Chip position, up to 26" x 4.6" in middle and back position
Tire clearance (fork) Up to 26 x 5.4" on 100mm rim
120mm fork note Using a 120mm suspension fork with slacken the head tube angle by 0.5°

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
Chainstay length 430-450mm 430-450mm 430-450mm 430-450mm
Wheelbase 1092-1112mm 1118-1138mm 1139-1159mm 1156-1176mm
Trail 85.5mm 85.5mm 85.5mm 85.5mm
Fork offset 51mm 51mm 51mm 51mm
Rigid fork axle to crown length 485mm 485mm 485mm 485mm
Stack 581mm 602mm 616mm 634mm
Reach 407mm 426mm 442mm 451mm
Standover 697mm 739mm 780mm 815mm


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 alloy 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 Lithic sealed cartridge bearing 6-bolt rotor hubs with tubeless ready 70mm Lithic Rhyolite aluminum rims. Tubeless kit upgrade available.
Tires Dillinger 27.5" x 4.0"
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)
Bottom Bracket Race Face, PF107, Ø41mm
Chain Shimano SLX 12-speed
Front Derailleur n/a
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)
Brakes Magura MT4
Pedals n/a
Seat Post Race Face Ride, 30.9mm

* Subject to change without notice.

Part Numbers

Option MPN Store SKU
Aqua / Small
Aqua / Medium 210000031182 210000031182
Aqua / Large 210000031183 210000031183
Aqua / X-Large
Charcoal / Small 210000031185 210000031185
Charcoal / Medium 210000031187 210000031187
Charcoal / Large 210000031186 210000031186
Charcoal / X-Large 210000031188 210000031188