SRAM X01 All Downhill Crankset - 165mm 10/11-Speed 34t Direct Mount DUB Spindle Interface For 83mm BSA 104.5/107 PressFit BLKSRAM X01 All Downhill Crankset 165mm 10 11 Speed 34t Direct Mount DUB Spindle Interface For 83mm BSA and 104. 5 107 PressFit Black. The 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