Polished aluminum crankarms and the DUB bottom bracket system mean the Rival crankset will keep spinning, no matter whatElegant 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 haulLonger DUB crank spindle accommodates both Road and MTB width frame bottom bracket standards for unmatched cross-compatibility across brandsCompatible with 135, 142 and Boost rear spacingWide chainline crankset to fit the biggest gravel tiresRequires the use of a DUB Wide bottom bracket172x40DUBBlackDirect Mount12spUPC/EAN/GTIN: 710845864391