SRAM RED AXS E1 Power Meter Chainring Kit - 12 Speed | Direct Mount

Specifications

• Model ID: PM-AXS-KITR-E1
• MPN (46/33T): 00.3018.387.000
• MPN (48/35T): 00.3018.387.001
• MPN (50/37T): 00.3018.387.002
• MPN (52/39T): 00.3018.387.003
• Speeds: 12
• Chainring Sizes: 46/33T, 48/35T, 50/37T, 52/39T
• Bolt Circle Diameter: Direct Mount (8-bolt)
• BB Spindle Interface: DUB
• BB Compatibility: All SRAM Road DUB BBs
• Chainring Material: Aluminum
• Power Meter Technology: Quarq, dual-sided
• Accuracy: +/-1.5%
• Connectivity: ANT+ and Bluetooth (AXS)
• Chainring Delta: 13-tooth across all pairs

FAQ

Does this kit include crank arms?

No. This kit is the power meter integrated into the chainrings (the spider and rings as one unit). It mounts to a SRAM RED AXS Direct Mount crank arm assembly, which is sold separately. Pair it with the SRAM RED Crank Arm Assembly E1 to build a complete power-meter crankset.

What cranks does this chainring kit fit?

It uses SRAM's 8-bolt Direct Mount interface and fits SRAM RED AXS Direct Mount crank arms running on All SRAM Road DUB bottom brackets. It is not compatible with older 3-bolt or threaded spider cranks.

How accurate is the power meter?

Power is accurate to within +/-1.5% and is not affected by temperature or weather changes during a ride. It measures both right and left leg power balance and pairs into the SRAM AXS app for calibration, firmware, and data.

What is the 13-tooth delta?

Every chainring pair uses a consistent 13-tooth delta between the big and small ring. That keeps front shifts crisp and reduces the cadence jump when you shift between rings, no matter which size combo you choose.

Best For

Road racers and serious performance riders on a SRAM RED AXS drivetrain who want pro-level, dual-sided power data with the lightest and stiffest integrated package SRAM builds, and who are pairing these rings with a RED AXS crank arm assembly to complete a power-meter crankset.