SRAM Red AXS 1x E1 Power Meter Spider DUB Crankset The best just got even better The name SRAM Red has always represented the highest level of road bike tech on the market, and this new SRAM Red 1x E1 Power Meter Crankset continues these advancements. The Red AXS E1 1x Crankset is designed to do it all; saving grams, providing ultra-accurate power measurement, and offering impressive aerodynamic gains. Even lighter than previous generations, this crank shaves off 29 grams with lighter hollow carbon fiber crankarms, using a new layup to shave weight, while also introducing a 160mm crank arm length option. The 1x chainring features an aerodynamic design, for the fastest rides while maintaining the unbeatable simplicity of a 1x drivetrain. The E1 Crankset runs on the ever-popular DUB(TM) bottom bracket standard- so no matter what you ride, there's most likely a DUB(TM) BB available for your bike. The integrated power meter is accurate up within +/- 1. 5%, without being affected by changing temperatures. The new SRAM Red AXS 1x E1 Power Meter Crankset compromises nothing in the pursuit of top-level performance. Features Integrated power meter offers accurate power readings within +/- 1. 5%, and isn't affected by temperature fluctuations Ultra-lightweight hollow carbon fiber crankarms with a new optimized carbon layup process, for less weight and a new 160mm crankarm option Direct-mount aero chainring for impressive aerodynamic gains while maintaining the simplicity of a 1x drivetrain setup X-SYNC narrow-wide chainring tooth profile features a squared-off tooth design for increased chain retention and a smoother, longer-lasting drivetrain29 grams lighter than the previous generation RED crank SRAM DUB(TM) bottom bracket spindle simplifies bottom bracket standards, meaning there's a high-performance and highly reliable DUB(TM) bottom bracket for nearly any bike SPECIFICATIONSPower Meter Included - Spider-type Bottom Bracket Spindle Interface SRAM DUB(TM) road Chainring Type Direct-mount 1x aero chainring Crank Arm Material Carbon Fiber Bottom Bracket Included No Weight N/A | Sram | Red Axs 1X E1 Power Meter Spider Dub Crankset 165 50T Aero | Aluminum