SRAM’s lightest, stiffest, and most accurate integrated power meter has become even lighter with a new carbon crank arm construction. The power meter is accurate to +/-1.5% and is unaffected by temperature changes, and the Direct Mount X-SYNC chainring is aerodynamic and incredibly durable. The power meter is fully integrated into the crank, making it lighter and more accurate. Ultra-light hollow carbon crank arms measure power on both crank arms. The new and refined construction of the 1x RED Aero crankset has resulted in a very low weight and high stiffness. It is a remarkable 29 grams lighter than its predecessor. The highly accurate integrated power meter has also become lighter with a new carbon crank arm construction. This is highly accurate to +/- 1.5% deviation and is unaffected by temperature fluctuations. Single chainring drivetrain simplifies functionality and reduces weight. Power meter is fully integrated into the chainring for lower weight and greater accuracy. Highly accurate power measurement up to +/- 1.5% deviation. Direct mount aero chainrings. Optimal chain control with X-range chainring. Ultra-light hollow carbon cranks. DUB bottom bracket. SRAM Article number: 735223 EAN code: 710845899089 Supplier number: 00.6118.686.004 Retail packaging: Yes