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, its 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 arent affected by climate conditions during a ride
• X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control

Speeds 12/13
BB Compatibility All SRAM Road DUB BBs
Chainring Size 44T, 46T
Bolt Circle Diameter (BCD) Direct Mount (DM)
BB Spindle Interface DUB
Chainring material Aluminium
Power Meter Type Ant USB
Chainring Offset 6.5mm