The Shimano Deore XT FC-M8130-1 is the Super Boost version of the XT 12-speed crank, with a 56.5mm chainline and 181mm Q-factor to clear 157mm rear spacing. It uses direct-mount chainrings and Shimano's Dynamic Chain Engagement+ tooth profile for chain retention on rough descents.
- 1x12-speed, direct-mount chainring interface
- 56.5mm chainline, 181mm Q-factor — for Super Boost 157mm frames
- Two-piece HOLLOWTECH II aluminium construction, 24mm steel spindle
- Crank lengths 170mm and 175mm
- Supplied without chainring or bottom bracket

