ROCKSHOX COMPRESSION KNOB KITSPARE PARTSThere are some times when you need a small part for your fork. Luckily most parts can be replaced easily. The Rock Shox Compression Knob Kit is designed to work with Rock Shox Lyrik RCT3 B1 (2018+), Pike RCT3 B1 (2018+), Lyrik RCT3 Ultimate C2 (2020+), and Pike RCT3 Ultimate B3 (2020+). Features Designed for Charger 2/2. 1 RCT3 Crowns Manufacturer's part number: 11. 4018. 082. 003 | Rockshox | Compression Knob Kit Rct3, Crown, Lyrik (B1), Pike(B1+)(C2)(B3)