SHIMANO XT FC-M8130-1 Super Boost Crank Arms - 12 Speed
56.5mm chain line works with 157 O.L.D.
Special MTB gear teeth profile improves chain engagement and retention
Hollow forged crank maximizes power transfer while limiting weight
Superior chain retention
Rigid and lightweight design for aggressive trail riding
Chainline: 56.5mm chain line works with 157 O.L.D.
Compatible Bottom Bracket Type: Outboard
Compatible Chain: HG 12-speed
Bolt Circle Diameter: 96mm asymmetrical 4-bolt (direct mount spider)
Chainring sold separately
Rear Speeds: 12
Recommended Bottom Brackets: BB-MT800-PA (Pressfit); BB-MT800 (Threaded)
Bottom Bracket sold separately
Threaded BB Shell Width: 68/73mm