Milwaukee Twins Nylon Pad For Primary Chain Tensioner For Harley Twin Cam The Milwaukee Twins Nylon Pad is designed for Harley Twin Cam models, offering a reliable replacement for the primary chain tensioner. Its durable nylon construction improves chain operation and minimizes both wear and noise. Aligned with OEM specifications, it ensures optimal chain tension for a smoother, quieter riding experience. Formerly offered under the J&P Cycles brand. Features: Nylon Pad Replaces OEM 39976-01