S&S Cycle 1999+ Super Stock 79cc Cylinder Head Kit - Silver

If you're looking to get more performance out of your 1999-2005 Harley-Davidson engine, especially if you're planning on a larger displacement build or a performance camshaft, this S&S Cycle Super Stock cylinder head kit is a solid choice. These heads are designed to work with your stock crankcase and are ideal for engines ranging from stock displacement up to 110 cubic inches. The 79cc combustion chamber offers a slightly higher compression ratio than stock, which helps most performance cams work more effectively, giving you improved throttle response and power.

The design here focuses on a good balance of low-end torque and top-end power. The large 1.940-inch intake valves and 1.575-inch exhaust valves are sized to maintain good port velocity for strong low and midrange response, while still allowing enough airflow for stock and slightly larger engines to reach their full potential. The included high-performance valve springs are rated to handle camshafts with up to .650 inches of lift, giving you flexibility for further engine upgrades. Plus, these heads are compatible with your stock rocker boxes, exhaust, and intake manifolds, making installation more straightforward. The silver powder coat finish also helps them blend in with your existing engine components.

This kit is machined for S&S Cycle compression releases, which can make starting your engine easier, especially with higher compression builds. Keep in mind that these heads are not CARB approved and cannot be shipped to California. For installation, you'll want to refer to the manufacturer's instructions for specific details regarding your engine configuration.