Front Chainwheel 12-Speed SHIMANO Deore XT FC-M8120-1 Hollowtech II 170mm w/o Chainring, BB

Regular price $241.00


Since their introduction many years ago, Shimano Hollowtech cranks have been the best cranks you can put on a mountain bike. Extremely strong, remarkably lightweight, and stiffer than a straight shot of whiskey.


The crankarm construction exemplifies the level of craftsmanship that's put into a Shimano crankset, utilizing a 3D hollow bonded structure to further reduce weight and increase stiffness. Chainrings are easily exchanged with the new direct-mount system and the cranks can be swapped between single and double front chainring setups. The spacing and chainline are optimized for Boost-spaced rear hubs for proper cassette positioning.



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: 178m

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.