Sram Unisex - Adult Force D2 Bicycle Chains, Iridescent 175 mm, 50/37T

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. Previously only available on RED, our integrated chainrings are light, stiff, and incredibly durable. The black finish mated to dazzling glossy carbon arms will elevate any bike. Features X-Range gearing technology gives you more range and a smoother gear progression, so you’re always in the right gear. Crisp and accurate front shifts. Carbon fiber crankarms for light weight and stiffness. Unique chainring shape results in a lighter weight, stiffer, more durable crankset. DUB bottom bracket adds durability and simplicity. Can be upgraded to a power meter. Specification Speeds: 12. BB Spindle Interface: DUB . Crank arm material: Carbon. Chainring material: Aluminium. BB Compatibility: All SRAM Road DUB BBs. Bolt Circle Diameter (BCD): Direct Mount (DM)