SRAM Rival AXS E1 Shifter + Caliper SetEngineered for precise, wireless electronic shifting and powerful hydraulic braking, delivering confident control and a clean cockpit for road and gravel. The SRAM Rival AXS E1 Shifter + Caliper Set provides integrated command over your 12 speed electronic drivetrain and disc brakes. Experience crisp, wireless gear changes and robust stopping power with exceptional modulation, all from an ergonomically refined lever designed for comfort and control.