90-4351 Rocker arm shaft set for S&S SH rocker boxes

This S&S rocker arm shaft set is designed specifically for use with S&S billet aluminum rocker boxes. These are high-strength shafts that provide a stable pivot point for your rocker arms, ensuring consistent valve actuation. Please note that these are intended for S&S SH-series Shovelhead-style engines and will not fit original OEM Shovelhead rocker boxes. They are the correct replacement for 1966 to 1984 Shovelhead models equipped with S&S billet boxes. This set is sold as a set of four, providing a complete solution for both the front and rear heads during an engine overhaul or rocker box upgrade, ensuring your valve train geometry remains perfect.