Supertech Honda D16Z6 Black Nitrided Exhaust Valve - +0.5mm Oversize - Set of 8

These Supertech exhaust valves are black nitrided, a surface hardening process that makes the valve face more durable and resistant to wear. This set includes eight valves, each measuring 0.5mm oversize, which is useful when rebuilding an engine and the valve seats have been reconditioned or replaced to a larger size. They are specifically made for the Honda D16Z6 engine, a popular choice for many Honda builds.

The black nitriding process not only improves hardness but also helps reduce friction, allowing the valve to move more freely within the valve guide. This can contribute to better sealing and improved engine performance. Because these are an oversize fit, they are intended for engine rebuilds where the cylinder head has been machined to accept them. Ensure you have the correct specifications for your rebuild before ordering.