SRAM RIVAL 1X D1 175x40 DUB WIDE NoBB BLACKPolished aluminum crankarms and the DUB bottom bracket system mean the Rival crankset will keep spinning, no matter what Elegant and secure direct mount X SYNC chainrings from the company that pioneered the 1x drivetrain for the ultimate in consistent chain control over the long haul Longer DUB crank spindle accommodates both Road and MTB width frame bottom bracket standards for unmatched cross compatibility across brands Compatible with 135, 142 and