S&S Cycle Performance Replacement Head - High Compression (76 cc) - Wrinkle Black - Evolution Big TwinFeatures Fully assembled, and include stainless steel valves and high lift springs Optimized for smaller displacement engines Available to be used with stock style flat top pistons Port design increases flow, while maintaining velocity Set up for . 585" maximum lift EFI compatible Made in the USA Intake manifold and gasket kits are sold separately. Specs Product Name Cylinder Head Kit Type Replacement Style High Compression Model Performance Color