The SRAM XX1 was built with a dedicated 1X design philosophy – making it simpler, lighter and more durable than any other. No matter where you ride, no matter what you’re up against: SRAM XX1. Unstoppable. The SRAM XX1 11 Speed Grip Shifter provides seismic shifting. The SRAM 1×11 X Actuation keeps shifting shapes and consistent across the entire 10-42T cassette. Uses SRAM’s Speed Metal shift indexing.