Regular price $3,040.00 Sale price$2,595.00

Note: This is a floor model and has been on a test ride.

Big adventures require a bike that can rise to the occasion. Arctodus is named after Arctodus simus, an Ice Age behemoth that was the largest bear to ever walk the Earth. Like its namesake, Arctodus the bike is versatile, strong, and ready to explore. It has adjustable geometry, a durable steel frame, a massive front triangle for a frame bag, lots of cargo mounts, and can clear the biggest fat bike tires on the market. Arctodus is ready for afternoon exploration, polar expeditions, and everything in between.


Arctodus was built around a 26" x 4.8" tire for optimal handling and control on loose trails. It can fit the biggest fat bike tires in the world. The biggest fat tire on the market is 26" x 5.05" and Arctodus eats them like a snack with room to spare. Same as 27.5" x 4.5", which is the biggest 27.5" tire available. Arctodus is the only bike to clear tires this big with a 12-speed drivetrain without chain interference. When a bike is created for big rides with fresh snow, it needs to fit tires that were designed for the same reason. This is a bike that prays for snow and cuts its own trail.

Base Build w/ Upgraded wheelset

Frame Chromoly with Tuning Chip™ dropout system
Fork Lithic carbon fat fork, suspension corrected, tapered steerer tube, 485mm axle-to-crown, 51mm offset
Headset Wolf Tooth Performance Headset, ZS44/EC44 (Purple)
Rear derailleur Shimano SLX M7100, 12-speed
Front derailleur None, 1x only bike
Shifters Shimano SLX M7100 Trigger, 12-speed
Cassette Shimano SLX M7100, 10-51t, 12-speed
Brakes Magura MT4
Cranks Race Face Aeffect with Wolf Tooth CAMO System P2 (+4mm offset) spider, 30T chainring
Bottom bracket Race Face, BSA 100mm
Handlebar Race Face Ride, 740mm riser
Grips Wolf Tooth grips
Stem Aluminum
Seatpost Aluminum, 31.6mm w/ Wolf Tooth Purple Seat Clamp
Seat WTB Volt Medium, 142mm width

HED Big Alloy Deal 26" x 80mm with 197mm HED hubs

Tires Terrene Johnny 5 Light 26"x4.8"
Chain Shimano SLX 12-speed
Frame Sizes S, M, L, XL

 Frame Specs

Bottom bracket standard 100mm BSA threaded
Q-factor 205mm with Race Face Aeffect crankset
Maximum chainring size 36T round or 34T oval
Front derailleur type None. 1x only bike.
Headset ZS44 upper, EC44 lower
Seatpost diameter Ø31.6mm, accommodates internally routed dropper post
Seatpost clamp Ø34.9mm
Front/rear hub standard 150x15mm thru axle / 197x12mm thru axle offset 5mm to drive side (rear wheel must be dished 5mm)
Front/rear axle Ø15x150mm, TP=1.5, TL=12mm / Ø12x235mm, TP=1.5, TL=14mm
Rear Dropouts Tuning Chip Dropout with adjustable chainstay length, offset 5mm
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 for 100-120mm travel forks
Fork offset 51mm
Bare frame weight (size M) 3410g
Fork weight (Otso rigid fork) 650g
Tire clearance (frame) Up to 26"x5.25" or 27.5"x4.5" or 29"x3" in all Tuning Chip positions
Tire clearance (fork) Up to 26"x5.4" on 100mm rim
120mm fork note Using a 120mm suspension fork with slacken the head tube angle by 0.5˚


Frame Size Small Medium Large X-Large
Recommended rider height 4'9"-5'5" 5'5"-5'9" 5'9"-6'1" 6'1"-6'7"
Recommended rider inseam 29"-32" 31"-33" 32"-35" 34"-37"
Effective top tube 589mm 610mm 632mm 657mm
Nominal head tube angle 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 90mm 100mm 120mm
Nominal seat tube angle 74° 74° 74° 74°
Seat tube length 380mm 420mm 465mm 510mm
Bottom bracket drop 80mm 80mm 80mm 80mm
Chainstay length 440-460mm 440-460mm 440-460mm 440-460mm
Wheelbase 1119-1139mm 1140-1160mm 1162-1182mm 1189-1209mm
Trail 94mm 94mm 94mm 94mm
Fork offset 51mm 51mm 51mm 51mm
Rigid fork axle to crown length 485mm 485mm 485mm 485mm
Stack 607mm 607mm 617mm 635mm
Reach 415mm 435mm 455mm 475mm
Standover 707mm 736mm 773mm 810mm

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