ZRP Std Exhaust Valves Inconel for BMW 3.2L S50 S54

BMW 3.2L S50 / S54 – ZRP Standard Exhaust Inconel Valves (Set of 12)

ZRP Standard Exhaust Inconel Valves are engineered for the BMW 3.2L S50B32 and S54B32 high-performance engines. Designed to withstand extreme exhaust temperatures and elevated cylinder pressures, these valves provide exceptional durability, thermal stability, and consistent performance in both naturally aspirated high-RPM applications and forced-induction motorsport builds.

Manufactured from premium nickel-based superalloys (Inconel 751 / 600 series), ZRP exhaust valves maintain structural integrity at exhaust gas temperatures exceeding 800°C. They are specifically developed for extreme-duty environments where conventional stainless-steel valves cannot tolerate the thermal and mechanical loads generated by high-revving M engines and track-oriented setups.

Each valve is precision CNC-machined, swirl-polished, and heat-treated to ensure outstanding dimensional accuracy, optimized surface finish, and resistance to thermal fatigue. Tight tolerances for stem straightness, concentricity, and sealing surfaces guarantee reliable combustion sealing and stable operation at sustained high RPM.

Technical Features

• Material: Nickel-based superalloy (Inconel 751 / 600 series)

• Heat Resistance: Maintains strength at exhaust gas temperatures above 800°C

• Manufacturing Process: Precision CNC machining, swirl polishing, and heat treatment

• Dimensional Precision: Strict tolerances for stem straightness, concentricity, and sealing surfaces

Advantages

• Reduced stem-to-guide friction for lower wear

• Improved stability at high RPM

• Significantly longer service life compared to untreated stainless-steel valves

• Reliable sealing in naturally aspirated and turbocharged/supercharged engines

• Suitable for high-performance street, track, and endurance racing applications

Additional Information

• Set Quantity: 12 valves

• Material: Inconel

• Valve Size: 30.50 mm / 5.95 mm / 105.65 mm

• Engine Codes: S50B32, S54B32