S&S Evo Cylinder Heads Black (106-4570)

S&S - CYLINDER HEADS FOR EVO MOTORS WITH STOCK-STYLE PISTONS

• Slight increase in compression (8.8:1 in an 80ci motor) with 82cc chamber volume.
• Now S&S heads are available to be used with stock-style flat-top pistons.
• Intake manifold and gasket kits are sold separately.
• Set up for .585 inch maximum lift.
• Made in the U.S.A.
• Port design increases flow, while maintaining velocity.
• Sold in pairs EFI compatible.
• Kits are fully assembled, and include stainless steel valves and high-lift (.585 inch) springs.
• Optimized for smaller displacement engines.
• Available in silver powder-coat or black powder-coat finish.

NOTE: This project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications.