SRAM Red AXS E1 Power Meter Direct Mount 2x12-Speed Chainrings

The ultimate in integrated power measurement

The RED AXS power meter kit adds Quarq technology to one-piece chainrings for the lightest, stiffest and most accurate power package available on the market. A 13-tooth difference across all chainring pairs ensures precise shifting in any configuration, as well as less drastic changes in cadence during front shifts. Combined with the most durable chainrings ever, it is an unbeatable combination.

Features

• X-Range gearing technology offers a wider range and smoother progression, so you always have the right gear.
• The power meter is fully integrated into the chainring for lower weight
• Power readings are accurate to within +/-1,5% and are unaffected by weather conditions during the ride
• Measures right and left leg power balance
• Crisp, precise front shifts
• The unique chainring shape creates a lighter, stiffer and more durable unit
• Available in 46/33T, 48/35T, 50/37T, 52/39T, 54/41T and 56/43T chainring combinations

Technical specifications

• Speed: 12
• BB compatibility: All BB SRAM Road DUB
• Chainring sizes: 46/33T, 48/35T, 50/37T, 52/39T, 54/41T, 56/43T
• Bolt circle diameter (BCD): Direct mount (DM)
• BB spindle interface: DUB
• Chainring material: Aluminium
• Power meter type: Ant USB

Supplied in an aftermarket box or OEM packaging depending on supply

Founded in Chicago in 1987 by Stan Day and a group of cycling enthusiasts, SRAM is still based in the US city today. It makes drivetrains and brakes for road, gravel and mountain bikes. Its story began with a single product: Grip Shift, the shifter that lets riders change gear by twisting the grip.