Built with input from the world's best riders, Charger 3.1 RC2 is a brilliant evolution of SRAM's proven damper platform. With increased damping range and High Speed Compression (HSC), Low Speed Compression (LSC), and Low Speed Rebound adjustments, Charger 3.1 RC2 smooths out the roughest trails.Includes shims for compression/rebound tune configurations and piston toolCompatible with RockShox FS-BXR-ULT-D1, FS-LYRK-SEL-D1, FS-LYRK-ULT-D1, FS-LYRK-ULT-D2, FS-PIKE-SEL-C1, FS-PIKE-ULT-C1, FS-PIKE-ULT-C2, FS-ZEB-R-A1, FS-ZEB-SEL-A1, FS-ZEB-SEL-A2, FS-ZEB-ULT-A1, FS-ZEB-ULT-A2, FS-ZEB-ULT-A3Charger 3.1 RC2 s adjustment range is broader with less compression damping in the LSC open position and additional support in the HSC closed position, this gives you the traction, control, and comfort you need to charge dicey lines all dayIncludes full right-side internals including controlsHigh Speed Compression, Low Speed Compression, and Low Speed Rebound adjustmentsIncludes vibration-fighting ButterCups to block 20% of trail chatter RockShox Charger 3.1 RC2 Damper Upgrade Kit Damper, Compression UPC: 710845910180