The SRAM Red 2x Direct Mount Power Meter Kit E1 provides reliable and accurate readings with integrated Quarq technology and a one-piece chainring design. This lightweight, stiff, and durable setup offers precise power readings with +/-1.5% percent accuracy. Readings are unaffected by rain or temperature and include right/left leg power balance metrics. X-Range gearing provides smooth gear progression with a 13-tooth delta for consistent cadence during shifts. Engineered for crisp, accurate front shifting, the unique chainring shape enhances stiffness and durability. The SRAM Red 2x Power Meter Kit is a great way to upgrade your drivetrain and start training like a pro.