Supertech BMW M50/M52/S50/S52 Black Nitrided Exhaust Valve - +1mm Oversize - Set of 12

Supertech is well-known for making solid valvetrain components, and this set of 12 black nitrided exhaust valves is a prime example. If you're rebuilding the top end of your BMW M50, M52, S50, or S52 engine, these valves are built to handle the demands of performance use.

These are a +1mm oversize exhaust valve, meaning they are slightly larger in diameter than stock. This allows for improved airflow into the cylinder, which can help boost performance. The black nitriding process hardens the valve surface and also helps reduce friction, contributing to better longevity and smoother operation. This set includes 12 valves, enough for a typical 6-cylinder engine.

When you're putting an engine back together, using well-made components like these valves ensures that your rebuild will be reliable. Make sure to check your valve guides and seats to ensure they are compatible with the +1mm oversize dimension.