Supertech Nissan RB25DET (w/Hydraulic Lifter) Inconel Exhaust Valve - +1mm Oversize - Set of 12

This set includes 12 Supertech Inconel exhaust valves, each measuring 1mm oversize for your Nissan RB25DET engine with hydraulic lifters. These valves are specifically designed to handle the high temperatures and stresses found in performance applications, making them a solid choice for rebuilding or upgrading your engine's top end.

Crafted from Inconel, a high-nickel, high-chromium alloy, these valves offer exceptional resistance to heat and corrosion. This material is known for its strength at extreme temperatures, which is crucial for exhaust valves that endure the hottest part of the combustion cycle. The +1mm oversize design allows for a larger valve head diameter, potentially improving airflow into the cylinder, and is intended for use when the valve seat has been machined to accommodate the larger size.

When rebuilding your RB25DET's cylinder head, using valves made from a material like Inconel can contribute to long-term reliability and performance. Ensure your valve guides and seats are properly prepared for the oversize dimensions before installation.