RockShox

Isolator RL Damper Upgrade Kit - Fits Reba B1+ (2026+), 3-Position (Crown Type)

RockShox Isolator RL Damper Upgrade Kit transforms the performance of compatible Reba B1+ forks, delivering refined control and versatility for modern XC and trail riders. Designed with a shim-based, spring-backed Internal Floating Piston (IFP), the Isolator system provides consistent damping and a predictable feel throughout the entire range of travel.

This 3-position crown-adjust damper lets riders fine-tune performance for terrain and effort. The Open mode smooths out rough trails with plush responsiveness, Pedal mode adds support and efficiency without harshness, and Firm mode maximizes damping force to reduce unwanted fork movement for efficient climbing and sprinting. Ideal for riders looking to extend the life and performance of their fork, this upgrade brings modern RockShox damping technology to existing Reba platforms.

• Compatible with Reba B1+ forks (2026 and newer)
• Three-position compression control: Open, Pedal, and Firm
• Shim-based, spring-backed Internal Floating Piston for consistency and smooth response
• Improves ride feel, reduces fork bob, and enhances efficiency across varied terrain
• Easy crown-style adjustment for on-the-fly tuning