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.
THE BIGGEST TIRE CLEARANCE
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 |
| Wheels |
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˚ |
Geometry
| 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 |