SRAM SX Eagle Boost Crankset - 170mm, 12-Speed, 32t, Direct Mount, DUB Spindle Interface, Black, A1The SRAM SX Eagle Crankset includes Eagle platform styling and features, in an entry level price point. SX Eagle cranks are compatible with all levels with SRAM Eagle drivetrain systems. SRAM DUB technology creates a lighter, stiffer and stronger crankset Boost compatible 52. 0mm chainline Offers the same chain retention performance as seen in all higher level Eagle drivetrain cranks 32t direct mount X SYNC 2 steel chainring included Aluminum crank