A single chainring with a wide-range cassette is a wonderfully clean way to tackle so many disciplines, and we’re the 1x leaders. Gravel, TT, tri or crits: just pick the right chainring size for the discipline and go. 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.   Features Single-ring drivetrain simplifies functionality and reduces weight. Direct mount chainrings are lighter and stiffer than traditional spider-based rings. 48T and 50T variants have direct mount aero chainrings for better aerodynamics. SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control. DUB bottom bracket adds durability and simplicity. Can be upgraded to a power meter.   Specification Speeds: 12. BB Compatibility: All SRAM Road DUB BBs. Chainring Size: 40T. Chainline: n/a. BB Spindle Interface: DUB. Chainring material: Aluminium. Bolt Circle Diameter (BCD): Direct Mount (DM). Crank arm material: Carbon. Colour (Crank arm): Grey w/Laser Foil. Power meter: No.