Includes: Pre-load Bushing Preload Bolt (LR Length) Pre-load Washer Elastomer Compatible with: Kinekt LR 50mm Suspension Seatposts Older 2.1 (S/M/L) and LR model seatposts This kit includes the correct bolt length specifically for LR-style seatposts. Always use Kinekt-authorized parts for best fit and performance.