Supertech's intake valves are made exclusively from enhanced EV8 (21-4N) steel. This high-grade steel provides the strength to withstand the abuse from high-powered, high-revving, and turbocharged applications. The stainless steel valve is finished with Blake Nitride Coating,?a treatment that features harder surfaces and smoother finishes, providing less friction and subsequently longer life.
Single groove keeper setups are available for ?high rpm usage. This setup grips the actual shaft of the valve, rather then relying on the traditional three groove material?to restrain the valve.
Supertech Stainless Intake Valves - +1mm oversized valve head diameter and single groove keeper setup?(AIVN-1106S) - Qty 18?