Beargrease - Endure Geometry
Designed as a racing fatbike with race agility. Features new geometry with a compact rear end that meets the demands of even the most aggressive racer, while still maintaining the proper weight distribution and stability required for navigating varied and difficult surface conditions. Maximized standover clearance aids dabbing, stopping, and restarting in tough trail conditions
Full Carbon Layup
Fatbike appropriate tube sizing and shaping. Large cross-sections for aesthetic but also frame stiffness and efficiency; results in precise handing, race agility, and efficient pedaling. Excellent corrosion resistance
177mm Rear Spacing
Equivalent to 170mm rear spacing, but thru-axle design adds convenient hub catches that make wheel removal/installation easier; results in a stronger, symmetrical rear wheel while maintaining proper chainline with 100mm bottom bracket
177mm x 12mm DT Swiss RWS Thru-Axle
Improved rear end stiffness for precise handling and tool-free wheel changes
Tapered Headtube
Allows use of tapered and standard 1-1/8” forks
Shaped Chainstays and Seatstays
Double bend design provides maximum heel clearance in winter boots
Extra Wide Downtube
Large downtube acts as fender and helps keep the crud off your body
Direct Mount Front Derailleur Adaptor
Salsa Offset Direct Mount Adaptor adds flexibility to drivetrain setup, and allows clean 1x build
27.2mm Seatpost
For rider comfort
Full Length Cable Routing
Improved performance in poor conditions
Rear Tire Clearance
Designed for 26 x 4.0" tires on 82mm rims with full drivetrain. Compatible with 29+ tires on 50mm rims with full drivetrain. Compatible with 26 x 4.0” tires on 90/100mm rims. Tires measuring an actual 4.3 - 4.7” (regardless of rim width) will fit but will require drivetrain modification. Not compatible with Surly Bud and Lou tires.
Waterbottle Bosses
Frame accepts 2 bottle cages (1 on SM)
Salsa Whiteout Carbon Fork Included
Ultra light Carbon monocoque fork. Full-carbon tapered steerer tube. Oversized fatbike-appropriate blades. 15mm thru-axle. 74mm post mount
142mm Fork Spacing
Equivalent to 135mm front spacing, but with convenient hub catches that make wheel removal/installation easier
142mm x 15mm Front Thru-Axle
Improved front end stiffness, precise handling, and tool-free wheel changes
Fork Tire Clearance
26 x 4.8" on 100mm rims. Compatible with all 26 x 4.0 - 5.0” tires and 29+ tires.


Frame 2014 Beargrease Carbon XX1
Wheelsize 26" fatbike (closer to 29" in diameter in reality)
Tire Clearance Designed for 26 x 4.0" tires on 82mm rims
Fork Salsa Makwa Carbon Fork Included
Headset-Upper IS41/28.6
Headset-Lower IS52/40
Seatpost 27.2mm
Seat Collar 35.0mm. Salsa Lip-Lock included
Front Derailleur Salsa Direct Mount clamp included, High Direct Mount Front Derailleur for 2x compact; top-pull only
Bottom Bracket 121mm PressFit
Crankset Fatbike 1x or 2x compatible; Max chainring sizes 1x (32T), 2x (36/24T)
Front Brake 74mm post mount for 160mm rotor, maximum rotor size 180mm
Rear Brake 74mm post mount for 140mm rotor, maximum rotor size 160mm
Front Spacing 142mm x 15mm thru-axle
Rear Spacing 177mm x 12mm thru-axle
Bottle Mounts 2 per frame sizes M - XL, 1 per frame size S
Derailleur Hanger FS2323
Cable Routing Full housing: Internal shift routing, external brake routing
Frame Weight SM 1480g, MD 1360g, LG 1640g, XL 1660g
Fork Weight w/Uncut Steerer 730g
Color Matte Carbon w/ Yellow/Green