Shimano Deore XT FC-M8100 12spd MTB Crankset 52mm CL – Boost 142/148 170mm 30T
The Shimano XT M8100 Single 12 Speed Chainset features an entirely new construction, using direct mount chainrings, special gear tooth profile for improved chain retention. Shimano Deore XT FC-M8100 12 Speed Mountain Bike Crankset – 170mm 30T.