A single chainring with a wide-range cassette is a wonderfully clean way to tackle so many disciplines, and we’re the 1x leaders. 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 tyres.   Features Direct mount chainrings are lighter and stiffer than traditional spider-based rings. Wide chainline crankset to fit the biggest gravel tires. Longer DUB crank spindle accommodates both Road and MTB width frame bottom bracket standards for unmatched cross-compatibility across brand. Compatible with 135mm, 142mm and Boost rear spacing. Sram X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control. DUB bottom bracket adds durability and simplicity.   Specification Speeds: 12/13. BB Compatibility: All Sram Road WIDE DUB BBs, except Ai. Chainring Size: 40T. Chainline: 47.5mm. BB Spindle Interface: DUB Wide. Chainring material: Aluminium. Bolt Circle Diameter (BCD): Direct Mount (DM).