Rock Shox Isolator RL Damper Upgrade Kit Isolator's shim-based, spring-backed Internal Floating Piston (IFP) is designed to give riders a consistent and predictable feel throughout travel. Isolator offers a three-position Compression damping adjustment: a plush Open to absorb big impacts, a supportive Pedal without harshness on successive hits, and a watt-saving Firm for the maximum damping force to calm bobbing for the most efficient ride. Features Includes full right-side internals and controls Compatible Reba RL B1 (2026+) 3-Position crown type For use with Rock Shox model: FS-REBA-GLD-B1MFG#: 00. 4318. 063. 014 | Rockshox | Isolator Rl Damper Upgrade Kit Reba B1+ 3Postion (Crown Type) Isolator Rl