Shimano XT FC-M8120-1 Crankset, 175mm, 30T, 55mm Chainline, Hollowtech II, 12-Speed, Black, 630g. The Shimano XT FC-M8120-1 is a trail-ready crankset built for aggressive mountain riding. It uses a direct-mount 30T chainring and a 55mm chainline, ideal for Boost 141/148mm rear hub spacing.
