Supertech Honda B18A/B18B Black Nitrided Exhaust Valve - +0.5mm Oversize - Single

If you're rebuilding the top end of your Honda B18A or B18B engine, getting the right valves is crucial for performance and longevity. This Supertech exhaust valve is made to replace your stock unit, but with some key updates. It's designed to handle the heat and stress of combustion, helping your engine breathe freely and efficiently.

This particular valve is treated with a black nitride finish. This process hardens the surface, making it more resistant to wear and corrosion, which is a big plus for an exhaust valve that sees high temperatures. It's also a +0.5mm oversize valve, meaning it's slightly larger than the original. This can help improve flow into the cylinder, especially if you're porting or modifying your cylinder head. It's a well-built component that's a popular choice for many Honda engine builds.