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- 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
- Q-factor: 178mm
- Chainline: 55mm chain line works with 148 O.L.D. (Prioritizes frame and tire clearance)
- Compatible Bottom Bracket Type: Outboard
- Compatible Chain: HG 12-speed
- Bolt Circle Diameter: Shimano 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
- Weight: 616g.
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Review Shimano FC-M8120-1 XT Boost Crank Arms - 12 Speed 175mm
