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SRAM RED E1 1x AXS Aero Power Meter Crankset

Josh Matthew July 12, 2024


The perfect 1x power meter for triathletes, time trials and cyclocross racers!

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SRAM RED E1 1x AXS Aero Power Meter Crankset

The SRAM RED E1 1x AXS Aero Power Meter Crankset is the perfect 1x power meter for triathletes, time trials and cyclocross racers! The 1x direct mount aero chainring provides a gear range that is perfect for racing and flatter terrains. In addition, Quarq’s premier DZero power measurement technology is +/- 1.5% accurate and has active temperature compensation. This power meter also features dual ANT+ and Bluetooth SMART, left and right power balance and a full 2-year warranty.

This power meter crankset uses SRAM’s latest carbon crank arms. Thanks to a new and optimized carbon layup, these are SRAM’s lightest road cranks ever. The continued use of a DUB spindle means they are compatible with a wide range of frames and bottom brackets. Additionally, SRAM has added new crank lengths, including as short as 160 mm.


Key Product Details


This power meter crankset is compatible with SRAM DUB bottom brackets. See Compatibility tab for more information.

Power Measurement:

The SRAM power meter measures power at the spider and is therefore able to measure power from both legs.

Key Features:

Dual-leg power measurement, integrated 1-piece chainrings, lightweight carbon crank arms, accurate to +/- 1.5%, CR2032 user-replaceable battery, left/right power balance, ANT+ and Bluetooth compatibility, auto-zero (automatic calibration). See Specs tab for more information.

Advice From Our Staff:

This is SRAM’s top-tier aero 1x power meter crankset. It uses carbon crank arms and makes your drivetrain simpler and lighter by removing the need for a front derailleur. Because it uses a spider-based power meter it measures power from both legs and provides left vs. right power balance. While the RED chainrings are made to last 50% longer than SRAM’s 11-speed chainrings, the chainrings cannot be replaced when worn, since the rings and power meter are one piece. Most customers can get many years of life out of the power meter before it needs to be replaced and SRAM offers a 50% off replacement when needed.


Options For This Power Meter

  • Chainrings: 48T | 50T | 52T
  • Crank arm lengths: 160 mm | 165 mm | 167.5 mm | 170 mm | 172.5 mm | 175 mm


Other Versions to Consider

SRAM RED E1 Power Meter Spider: If you already have SRAM RED AXS crank arms, we offer the SRAM RED E1 1x AXS Power Meter Spider.

RED E1 2x Power Meter Crankset: We also sell the SRAM RED E1 AXS Power Meter Crankset uses the same carbon crank arms but features 2x chainrings.


This power meter crankset is compatible with SRAM DUB bottom brackets.

SRAM RED 1x AXS Crankset Specs

NameSRAM RED 1x AXS Power Meter
Bike TypeRoad
Location of Power MeasurementSpider
Left or Both Legs MeasuredBoth
Independent Left/Right MeasurementPower Balance
InstallationMore involved (60 min. estimated)
Crank Arm MaterialCarbon
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.5%
Active Temperature CompensationYes
Battery TypeCR2032 coin cell
Method of Cadence MeasurementAccelerometer
Spindle SizeDUB 29 mm
Warranty2 years

In the Box

  • SRAM RED Power Meter Crankset
  • Set of Torx T20 Bolts

Tools Needed for Installation

You will need the following tools for installation of this product. You can purchase many of these commonly used tools in our store.

  • 8 mm Allen key
  • T20 Torx bit

Common Questions and Answers

Question: How do I determine what length my current cranks are so I can make sure I get the same size?

  • Your crank arm length should be printed or stamped on the inside of the left crank arm, usually near the pedal end.

End of crank arm showing crank arm length


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