106-1071 | 3-5/8" Bore Single Plug Retro Cylinder Head and Valve Train Upgrade Kit for 1966-'84 big twins plate cup set Pull the rubber boot back

Pull the rubber boot back and measure from the point at which the soft

Heavy-walled extreme duty crystal clear FEP Fluoropolymer outer insulation eliminates the need for grounding wires and ensures no interference with late model computer modules

The back showcases custom House of Harley® branding

2024 Touring Models

light-weight die-cast aluminum

106-1071 | 3-5/8" Bore Single Plug Retro Cylinder Head and Valve Train Upgrade Kit for 1966-'84 big twins plate cup set Pull the rubber boot backS&S Cycle 106 1071 Heres a way to give your 3 5 8" bore shovelhead engine the nostalgic look of a pan, and improve performance at the same time. The Retro Cylinder Head and Valve Train Upgrade Kit consists of a set of S&S P Series 3 5 8" single plug cylinder heads with rocker cradles, S&S roller rocker arms, S&S hydraulic tappets, billet tappet guides, Quickee pushrods, pushrod cover clips, and the required gaskets and hardware for assembly. Fits 3 5