Skunk2 Alpha Series Valves Stock Size Standard Compression Honda D-Series Intake Pro Series Intake Manifold runner

Pro Series Intake Manifold runner exits are also machined to best match the cylinder head’s ports

up from the stock 63mm

The much anticipated Ultra "Street" intake manifolds for the Honda B16A/ B17A and B18C engine or VTEC cylinder heads has finally arrived

and represents the very best in aftermarket parts and tuning

Skunk2 Alpha Series Valves Stock Size Standard Compression Honda D-Series Intake Pro Series Intake Manifold runnerSkunk2 Alpha Series Valves for the Honda D16Z6, D16Y5, D16Y7, and D16Y8 are manufactured from HNV 3 martensitic steel (IN) and EV8 austenitic steel (EX) one piece forgings. Each valve is heat treated using a proprietary process for extraordinary strength and durability and then hard chrome plated to further increase strength, significantly reduce friction, and increase corrosion resistance. Other valves may appear similar, but only Alpha Series Valves