Single-ring drivetrain simplifies functionality and reduces weightWide chainline crankset to fit the biggest gravel tiresLonger DUB crank spindle accommodates both Road and MTB width frame bottom bracket standards for unmatched cross-compatibility across brandsCompatible with 135mm, 142mm, and Boost rear spacingX-Sync wide-tooth, narrow-tooth chainring technology provides maximum chain controlCompatible with all Sram Road WIDE DUB BBs, except Ai, DUB 83-A BBs Only165x40DUB WideBlackDirect Mount12sp