Sram: The crank is the very center of our X-Range gearing philosophy. With tight 13-tooth gaps between chainrings paired to wide-range cassettes, riders get more range while shifting less frequently and staying in the big ring longer. Our 43/30T chainring combo combined with a wide chainline increases tire clearance while providing ideal gearing for venturing off-road.FEATURESX-Range gearing technology gives you more range and a smoother gear progression, so you’re always in the right gearCrisp and accurate front shiftsWide chainline crankset for bikes with up to 700x45c or 27.5x2.1” tire widths (43/30T chainrings only)Longer DUB crank spindle accommodates both Road and MTB width frame bottom bracket standards for unmatched cross-compatibility across brandsRequires Wide front derailleurDUB bottom bracket adds durability and simplicityCan be upgraded to a power meter SPECIFICATIONSSpeeds: 12BB Compatibility: All SRAM Road DUB BBsChainring Size: 43/30TCrank 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): Unicorn Grey w/Laser FoilPower meter: n/aPower Meter Type: n/a