HardDrive Parts Heavy Duty Long Life Cam Chain And Tensioner Kit For Harley Twin Cam The HardDrive Parts Heavy Duty Long Life Cam Chain and Tensioner Kit provides all the essentials needed for a thorough cam chest rebuild. This kit ensures reliability and performance when pushing the limits on the throttle. Its heavy-duty construction promotes durability and long life, making it an essential component for those seeking dependability in their engine performance. Features: Heavy duty cam chain and long life cam chain tensioners kit for Twin Cam motors Replacement inner and outer hydraulic cam chain tensioners Note: Cam chain tensioner wear differently depending on usage, oil change frequency and many other factors. We recommend inspection for wear frequently to avoid any engine damage.