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In certain disciplines, the single-ring drivetrain reigns supreme. Championing simplicity, strength and durability, the SRAM RED 1 AXS™ power meter meets the demands of triathletes, time trialists and cyclocross racers. The power meter features improved aerodynamics thanks to direct mount aero chainrings with fully integrated power, and the tighter gearing range is perfect for racing and areas with flatter terrain.

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  • Single-ring drivetrain simplifies functionality
  • 48 and 50t variants have fully integrated power into a direct mount aero chainring
  • 36-46t variants have spider-based power
  • Chainrings can be easily changed without requiring recalibration of the power meter
  • Power readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ride
  • Measures right and left leg power balance
  • SRAM X-SYNC™ wide-tooth, narrow-tooth chainring technology provides maximum chain control
  • Laser-etched chainring finish is more durable
  • DUB™ bottom bracket adds durability, simplicity and broad compatibility
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Speeds 12
Crank arm length 165mm, 167.5mm, 170mm, 172.5mm, 175mm, 177.5mm
BB Compatibility All SRAM Road DUB™ BBs
Chainring size 40, 46, 48, 50
Bolt Circle Diameter (BCD) Direct Mount
Chainline 45.0mm
BB Spindle Interface DUB™
Chainring Material Aluminum
Guard No Guard
Crank arm material Carbon
Color Natural Carbon
Power Meter Type ANT+ and BLE


Installation. Service. Compatibility. Find all the documentation needed to setup, use, and maintain your components in the SRAM Service hub.

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