SRAM Red AXS E1 Power Meter/Chainring Kit 52/39T Black/Silver

It’s the ultimate in integrated power measurement.

The RED AXS power meter kit adds Quarq technology to our one-piece chainrings for the lightest, stiffest, and most accurate power package available. A 13-tooth delta on all chainring pairs ensures precise shifting for any setup, as well as a less dramatic change in cadence during front shifts. Combined with our most durable chainrings ever, it’s an unbeatable combination.

FEATURES

• X-Range gearing technology gives you more range and a smoother gear progression, so you’re always in the right gear
• Power meter is fully integrated into the chainring for lighter weight
• Power readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ride
• Measures right and left leg power balance
• Crisp and accurate front shifts
• Unique chainring shape results in a lighter weight, stiffer, more durable unit
• Available in 46/33T, 48/35T, 50/37T, 52/39T, 54/41T, and 56/43T chainring combos

SPECIFICATIONS

• BB Compatibility: All SRAM Road DUB BBs
• Chainring Size: 52/39T
• Bolt Circle Diameter (BCD): Direct Mount (DM)
• BB Spindle Interface: DUB
• Chainring material: Aluminum
• Power Meter Type Ant USB