Supertech Mazda Miata 1.8L Black Nitrided Exhaust Valve - +1mm Oversize - Single

This listing is for a single Supertech exhaust valve designed for the Mazda Miata 1.8L engine. It's a +1mm oversize valve, meaning it's slightly larger than the stock size, which can help improve airflow into the combustion chamber when rebuilding or modifying your engine. The valve features a black nitrided surface treatment, a process that hardens the surface and can improve wear resistance and durability.

When you're working on the top end of your Miata's engine, especially if you're looking to get a bit more performance out of it, valves are a critical component. This Supertech valve is well-built and intended as a direct replacement for your stock exhaust valve, but with the added benefits of the oversize dimension and the nitrided finish. It's a solid option if you're doing a performance build or a thorough engine overhaul and need reliable internal components.