SRAM X01 DH CranksetThe SRAM X01 DH Crankset is engineered for the most ultimate, most aggressive downhill rides. Featuring DUB technology, its ready for your most relentless, steep and slightly scary lines. SRAM X SYNC 2 1x delivers top chain retention in rough terrain DUB technology for strong, stiff, lightweight performance Abrasion guard prevents rub and keeps the crank arm pristine 56. 5mm chainline SRAM X01 All Downhill Crankset 165mm, 10 11 Speed, 34t, Direct