The Supertech black nitride intake valve for Nissan GTI-R / RNN14 applications is a single +1.0mm oversize valve. Supplied individually with a black nitrided finish, this intake valve is intended for use in valve replacement or rebuilds on GTI-R/RNN14 engines where an oversize nitrided intake valve is specified.
Supertech Nissan GTI-R / RNN14 Black Nitrided Intake Valve - +1mm Oversize - Single