Elegant & secure direct-mount X-SYNC chainrings from the company that originated the 1x drivetrain for the ultimate in consistent chain control over the long haul. FEATURES Direct mount chainrings in 38t through 46t DUB™ bottom bracket adds durability & simplicity Wide chainline crankset to fit the biggest gravel tires Longer DUB crank spindle accommodates both Road & MTB width frame bottom bracket standards for unmatched cross-compatibility across brands Compatible with 135, 142 & Boost rear spacing