Supertech Nissan RB20DE / RB20DET (w/Solid Lifters) Inconel Exhaust Valve - +1mm OS - Set of 12

Made from Inconel, a high-nickel alloy known for its exceptional strength and heat resistance, these Supertech exhaust valves are built to handle the demands of performance Nissan RB20DE and RB20DET engines running solid lifters. Each valve is precisely machined to a +1mm Oversize, which can help restore compression and improve sealing in engines that have been previously machined or are showing wear.

This set includes 12 valves, enough for a complete engine rebuild. The Inconel material is crucial for exhaust valves because it can withstand the extreme temperatures and pressures found in the exhaust port, helping to prevent valve float and maintain performance under load. The +1mm oversize dimension is a common choice when rebuilding an engine to ensure a fresh, tight seal in the valve seat, especially if the original seats have been reconditioned.

If you're rebuilding the top end of your RB20, these valves are a solid option for ensuring reliable performance and longevity. They are designed to fit specific RB20DE and RB20DET applications that utilize solid lifters.