SRAM Red AXS 1x Aero Power Meter E1, Power Meter Crankset, Speed: 12, Spindle: 28.99mm, BCD: Direct Mount SRAM 8 Bolt,

It's the best tool to help you reach your best. Our lightest, stiffest, and most accurate integrated power meter just got lighter with a new carbon crankarm construction. Our power meter is accurate to +/-1.5% and isn't affected by temperature changes, and the direct mount X-SYNC chainring is aero and incredibly long-lasting. Plus we're offering more crank arm lengths than ever before to ensure this crank works for you.Features:- Power meter is fully integrated into the chainring for lighter weight and greater accuracy- Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride- Measures right and left leg power balance- Ultra-light hollow carbon fiber crankarms are 29 g lighter than previous generation- DUB bottom bracket adds durability and simplicitySpecifications:- Speeds: 12- BB Compatibility: All SRAM Road DUB BBs, except Ai- Chainring Size: 50T- Crank arm length: 170mm- Chainline: 45.0mm- BB Spindle Interface: DUB- Chainring material: Alum