RockShox Charger 2.1 Damper Upgrade Kit

This kit is precision-engineered for specific RockShox SID models, including the SID RLC (A1), SID Ultimate (B4), and SID RL/XX/WC (B1) from 2017 and newer. Always check your fork's serial number or model year against these compatibility requirements before purchasing.

You will notice a significant improvement in small-bump sensitivity, meaning the fork tracks better over chatter and roots. The Charger 2.1 damper also provides more consistent damping support, which helps the fork stay higher in its travel during aggressive riding.

If you are comfortable performing a standard lower-leg service and have the correct tools—specifically a cassette tool and a torque wrench—this is a manageable DIY project. If you are unsure about handling internal suspension components, a professional mechanic is recommended to ensure the damper is seated and torqued correctly.

No, this kit is designed to upgrade the damping internals, not to alter the travel of your fork. It is compatible with forks up to 120mm of travel, but it will not increase or decrease your current travel setting.

The Charger 2.1 damper features refined shim stacks and seals designed to reduce friction and improve oil flow compared to older or lower-tier dampers. This results in a smoother, more controlled ride feel that is less fatiguing on long, technical descents.