Supertech Mazda Miata 1.8L Black Nitrided Exhaust Valve - Set of 8

This set includes eight Supertech black nitrided exhaust valves, specifically made for the 1.8L engine found in many Mazda Miata models. These valves are a direct replacement for your stock units, and the black nitriding process is applied to enhance their durability and performance.

The black nitriding treatment is a surface hardening process that creates a tough, wear-resistant layer on the valve face and stem. This helps the valves stand up better to the high temperatures and stresses inside the combustion chamber, leading to a longer service life. They are well-built to handle the demands of your engine, whether you're driving daily or pushing your Miata on the track.

When rebuilding or refreshing the top end of your 1.8L Miata engine, these valves are a solid option. Ensure you have all necessary related components for installation, such as valve springs, seals, and retainers, as these are typically sold separately.