Supertech Honda B16/B18C Black Nitrided Exhaust Valve - +0.5mm Oversize - Single

The black nitrided finish on this Supertech exhaust valve is a key detail. This surface treatment hardens the valve face and stem, making it more resistant to wear and corrosion, especially under the high temperatures found in the exhaust port. This particular valve is a +0.5mm oversize option, designed to replace a worn or damaged stock valve with a slightly larger diameter, which can help restore compression and performance when rebuilding or refreshing your Honda B16 or B18C engine.

When you're working on the top end of your B16 or B18C, using valves that can handle the heat and stress is important. Supertech uses a solid material for these exhaust valves, and the nitriding process adds another layer of durability. The +0.5mm oversize means it's intended for engines that might have had their valve seats reconditioned or slightly enlarged, ensuring a good seal. This is a single valve, so you'll need to order the correct quantity for your specific engine build.