Supertech Nissan RB26 31.15X6.94X101.20mm +1mm Inconel Exhaust Valve - Set of 12

If you're rebuilding the top end of a Nissan RB26 engine, especially for high-performance applications, these Supertech Inconel exhaust valves are a solid choice. This set includes 12 valves, each measuring 31.15mm in diameter, 6.94mm stem, and 101.20mm overall length, with a +1mm oversize to ensure a fresh seat surface when rebuilding.

These valves are constructed from Inconel, a high-nickel, high-chromium superalloy known for its exceptional strength and resistance to extreme temperatures and corrosive exhaust gases. This makes them ideal for boosted or high-RPM RB26 builds where stock valves might struggle. The material choice means they can handle the intense heat and pressure found in performance exhaust ports, helping to maintain sealing integrity under demanding conditions. The +1mm oversize is a practical detail for engine builders, allowing for a clean, fresh valve seat to be cut, ensuring optimal sealing and performance.

When working on an RB26, especially one being built for serious power, using components like these Inconel valves is crucial for reliability and longevity. They are designed to work with standard RB26 valve guides and seats, though proper machining and installation by a qualified engine builder are always recommended to achieve the best results. This set is a key component for anyone looking to maximize the performance and durability of their RB26 engine.