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The S&S CYCLE Super Stock® Cylinder Head Kit (Part Number 90-1499) is designed to enhance the performance of your Big Twin motorcycle. These heads arrive fully assembled, including valve seats, valves, guides, seals, and .590-inch lift valve springs, ensuring a straightforward installation process. The kit also features collars and valve keepers, along with comprehensive hardware for rocker housings, top engine mount, and carb support bracket, complete with detailed instructions. Built to maintain a stock appearance, these heads deliver improved airflow, resulting in better performance compared to stock heads. They are designed to use OEM manifolds and exhaust systems, ensuring compatibility and ease of use. Made in the USA, these heads combine quality construction with a focus on durability and performance. Whether you're upgrading for increased horsepower or reliability, this kit offers a comprehensive solution for your Big Twin engine. The design includes a single plug with a band style configuration, optimized for performance and efficiency. With the S&S CYCLE Super Stock® Cylinder Head Kit, riders can expect enhanced airflow, improved fuel efficiency, and a significant boost in engine responsiveness, all while maintaining a traditional look and feel of the stock components.
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