S&S Cycle 66-84 BT Retro Conversion 3-5/8in Bore Top End Kit

This S&S Cycle Retro Cylinder Head and Valve Train Upgrade Kit gives your 3-5/8 inch bore Shovelhead engine a classic Panhead look while also boosting its performance. What you get in this kit is a complete package designed to overhaul your engine's top end. It includes a pair of S&S P-Series 3-5/8 inch single plug cylinder heads, which come with integrated rocker cradles. You also receive S&S roller rocker arms for smoother operation, S&S hydraulic tappets, and solid billet tappet guides for improved stability. The kit is rounded out with Quickee pushrods, pushrod cover clips, and all the necessary gaskets and hardware you'll need for a full assembly.

This kit is a well-built solution for those looking to achieve a specific aesthetic and gain performance. The P-Series heads are designed to mimic the appearance of Panhead heads, offering that sought-after vintage style. Beyond the looks, the roller rocker arms and hydraulic tappets are chosen to reduce friction and wear within the valve train, contributing to improved reliability and potentially a quieter operation. The billet tappet guides ensure that your tappets stay properly aligned, which is crucial for consistent valve timing and overall engine health. This comprehensive approach means you're not just changing the look, but also updating key internal components for better function.

This upgrade is intended for 3-5/8 inch bore engines commonly found in Harley-Davidson Big Twin (BT) motorcycles from the 1966-1984 model years. It's a significant undertaking that changes the character of your engine, blending nostalgic styling with modern performance enhancements. Please be aware that this kit is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for detailed assembly procedures and any specific tool requirements.