Sram Red E1 AXS Powermeter 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.

• 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
• 52/39T chainrings