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  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike
  • Voytek XT Fat Bike

Voytek XT Fat Bike

$ 3,899.00

gloss platinum metallic and blue
matte black and gray


Complete bikes in stock and shipping now!


Voytek™ -- The ultimate hardtail mountain bike for plus and fat tires


Two shipping options are available during the checkout process:

1) Free shipping. This is a frameset and all parts needed to assemble a complete bike. Significant time and mechanical skill is needed to build the bike.
2) $120 shipping. This is a bike that has been fully assembled and tuned by Otso technicians. The bike will be partially disassembled for shipping (wheels, handlebar and seat post removed) but can be fully assembled by a home mechanic in 30 minutes or less. 

Build Specs


Voytek XT Fat Bike
FRAME Voytek patent pending carbon frame, Tuning Chip dropout system, 177x12 rear axle spacing, Plus/Fat Narrow Q-factor design with PF107 BB, guided internal rear derailleur routing, external brake routing, downtube and chainstay protectors, matching alloy bottle cage bolts
FORK Voytek carbon fork, suspension corrected, tapered, 485 axle to crown, 51mm offset
Note: RockShox Bluto upgrade available
HEADSET FSA with Wolf Tooth headset spacer and stem cap (IS41/IS52)
REAR DER Shimano XT M8000 11-speed
FRONT DER None, 1x only bike
SHIFTERS Shimano XT M8000 11-speed
CASSETTE Shimano SLX M7000 11-42t
BRAKES Shimano XT M8000
CRANKS Race Face Aeffect with 175 mm crankarms and custom offset Wolf Tooth 32t CAMO chainring (size Small frames ship with 170 mm crankarms, 170 mm crankarms are available on other sizes upon request)
BOTTOM BRACKET Race Face (PF107, 41mm OD)
BAR FSA Aluminum
GRIPS Lock On with blue or black ano to match the bike color
POST FSA SL-K carbon 30.9mm
SEAT WTB Volt Pro 142
WHEELS DT Swiss 350 hubs with tubeless ready 70mm Lithic Rhyolite aluminum rims. Tubeless kits available on add-on page
TIRES Terrene Wazia Light 26x4.0" tire, 120tpi, folding bead
Weight (Size Medium)* 25.7 lbs with rigid fork

*Weights are based off pre-production painted frames and may vary slightly in final production.



Voytek Upgrades and Add-Ons

We worked very hard to create a build spec to maximize the performance of the bike and provide good value but we also understand the importance of customizing your bike for your specific trails and riding style.  For that reason we have partnered with some of the top companies in the industry to provide a highly curated list of upgrades and add-ons to bring your bike to the next level.  (Click on icons below to view upgrade  and add-on options.)

Upgrades are parts that will be swapped out from the original spec and are only available on bike purchases.  

Add-ons will be shipped in addition to the original bike parts or frame.

Upgrades AddOns                                                               
 Crankset   Race Face Next SL
 Wheelset Options from ENVE, Industry Nine, Whisky, Lithic, Race Face, and DT Swiss
 Cockpit   Thomson Cross Country 730 Carbon Handlebar, X4 Stem, Elite Seatpost
 Drivetrain   Shimano XTR M9000, SRAM XX1, and SRAM XX1 Eagle
 Tires Options from 45NRTH, Schwalbe, Terrene, and WTB



 Frame Geometry 





Nominal size Small Medium Large X-Large
Effective top tube 585 mm 610 mm 630 mm 645 mm
Nominal head tube angle rigid fork 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 90 mm 115 mm 130 mm 150 mm
Nominal seat tube angle 73° 73° 73° 73°
Seat tube length 381 mm 432 mm 483 mm 533 mm
BB drop 58-62 mm 58-62 mm 58-62 mm 58-62 mm
Chainstay length 430-450 mm 430-450 mm 430-450 mm 430-450 mm
Wheelbase 1092-1112 mm 1118-1138 mm 1139-1159 mm 1156-1176 mm
Trail 85.5 mm 85.5 mm 85.5 mm 85.5 mm
Fork offset 51 mm 51 mm 51 mm 51 mm
Rigid fork axle to crown length 485 mm 485 mm 485 mm 485 mm
Stack 581 mm 602 mm 616 mm 634 mm
Reach 407 mm 426 mm 442 mm 451 mm
Standover 697 mm 739 mm 780 mm 815 mm

 (Also available in PDF format for metric and english versions.)



Frame Specs

Bottom bracket standard 83 mm (press fit 107)
Q factor 183 mm with Raceface Next SL cranket, 188 mm with Raceface Aeffect crankset
Max chainring size 34T round or 32T elliptical
Front/Rear hub standard 150 x 15 mm thru axle / 177x12 mm thru axle
Seat post diameter 30.9 mm, accommodates internally routed dropper post
Headset IS41 / IS52
Fork axle-to-crown 485 mm (suspension corrected for 100-120 mm travel forks)
Fork offset 51 mm
Tire clearance (frame) 4.0" @ 430 chainstay, 4.6" @ 440/450 chainstay (actual frame clearance of 117 mm)
Tire clearance (Otso fork) up to 4.8" on 100 mm rim
Bare frame weight (size M) 1350 g
Fork weight 650 g
120mm fork note: Using a 120 mm suspension fork will slacken the head tube angle approx. 0.5°



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