Sram: A single chainring with a wide-range cassette is a wonderfully clean way to tackle so many disciplines, and we’re the 1x leaders. Our lightweight and strong direct mount chainrings feature X-SYNC tooth technology to maximize chain retention, and they bolt to carbon arms with a spectacular but subtle finish. The wide chainline crankset fits in road and MTB bottom bracket standards so frames can fit wider gravel tires.FEATURESSingle-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 spacingSRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain controlDUB bottom bracket adds durability and simplicityCan be upgraded to a power meter SPECIFICATIONSSpeeds: 12BB Compatibility: All SRAM Road DUB BBsChainring Size: 40TCrank arm length: 165mm, 167.5mm, 170mm, 172.5mm, 175mm, 177.5mmChainline: n/aBB Spindle Interface: DUBChainring material: AluminumGuard: n/aBolt Circle Diameter (BCD): Direct Mount (DM)Crank arm material: CarbonColor (Crank arm): Grey w/Laser FoilPower meter: n/aPower Meter Type: n/a