The SRAM Eagle S100 Crank assembly provides confidence with a robust aluminum crankset. A 3-bolt interface ensures compatibility with SRAM Eagle X-Sync 2 chainrings (sold separately).Aluminum crank arms3-bolt interface ensures compatibility with SRAM Eagle X-Sync 2 chainrings (chainrings sold separately)Requires 118/73 Powerspline Bottom Brackets (sold separately)Item SpecificationsBB IncludedNoChainline/Hub Compatibility135/142 MTB HubsChainline/Hub Compatibility141/148 Boost HubsChainring BCDDirect Mount SRAM 3-BoltColorBlackCrank Intended UseMountainCrank Length (mm)155Defined ColorBlackNumber of ChainringsNo Rings IncludedPedal Spindle9/16"Spindle Interface TypeTruVativ Power Spline SRAM S100 Eagle Crank Arm Assembly Crankset UPC: 710845928543