Manley Stainless Steel Performance Valves

Manley Stainless Steel Performance Valves are engine valves, sold as intake and exhaust valves, for stock replacement and mild to serious performance builds. Manley Performance is a long-established name in racing and performance engine components. These valves are made from premium stainless steel alloys. The alloys are chosen to handle high combustion pressures, high temperatures and aggressive cam profiles.

Key Features:

• Stainless steel construction: The alloys are formulated separately for intake and exhaust duty.
• Back-cut design: This design improves airflow through the port.
• Swirl-polished surfaces: The polish reduces drag and supports efficient flow.
• Chrome stems: The chrome finish helps the valve resist wear in the guide.
• Hardened valve tips: The hardened tips add strength and longevity under spring load and rocker contact.
• Precision machining: Each valve is fully machined for consistent quality.

Manley valves help engine builders get more power while keeping the engine reliable. They suit street performance, bracket and track-oriented engines. Choose the specific part number that matches your build.