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Upgrade your Harley-Davidson Evolution Big Twin with the S&S CYCLE 106-6064 high compression performance replacement head. This fully assembled head features stainless steel valves and high-lift springs, ensuring durability and optimal valve operation. Designed for smaller displacement engines, it enhances power output while maintaining reliability. The head is compatible with stock-style flat-top pistons, making it a versatile upgrade for various builds. Its port design increases airflow efficiency while preserving velocity, contributing to improved throttle response and overall engine performance. Set up for a maximum lift of .585 inches, this head is optimized for high-performance applications and EFI compatibility. Made in the USA, the head offers quality craftsmanship and precise engineering. Please note that intake manifold and gasket kits are sold separately, allowing for tailored installation according to your setup. This component is ideal for riders seeking to boost performance with a durable, high-quality part that seamlessly integrates with existing systems.
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