SRAM RED AXS 2x Power Meter Chainring Kit - 46/33t, 2x12-Speed, 8-Bolt, Direct Mount, Black/Silver, E1

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