Sram: When you need the absolute best from your training data, the pro-proven accuracy and reliability of the RED AXS power meter is the way to go. Integrated into the chainring itself, it’s light, stiff and aero, accurate to +/-1.5% even as weather conditions change, and retains chains even when you hit rough stuff. FEATURES AXS enabled for easy monitoring and firmware upgrades Single-ring drivetrain simplifies functionality Fully integrated power meter into a direct mount aero chainring Power readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ride X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control Available in 48T, 50T, and 52T SPECIFICATI ONS Speeds 12 BB Compatibility All SRAM Road DUB BBs Chainring Size 48T, 50T, 52T Bolt Circle Diameter (BCD) Direct Mount (DM) BB Spindle Interface DUB Chainring material Aluminum Power Meter Type Ant USB