Threaded BB86-FAT-BB bottom bracket for Fat Bike PF41 , BB121 (41mm ID) and 24mm spindle diameter cranks. Machined cups thread together for stability, increased bearing life, and simple installation and maintenance. No more creaking. Smooth operation. Fast bearing replacement.
This is a fat bike bottom bracket! Your frame must have a 41mm inner diameter, with a width of 121mm. If used on a shell with a 132mm width, the cups will overlap 3 threads max.
Compatible with the following Bottom Bracket Standards:
Compatible Crank Spindle Type: FSA MegaExo, RaceFace EXI (24mm spindle diameter)