Manley 11187-6 Race Series Exhaust Valve Set 36.10 mm Head 0.3136 in. Stem

The Manley 11187-6 Race Series stainless steel exhaust valves are engineered for Sport Compact applications and manufactured to the highest quality standards using Manley's premium Race Series alloy. Designed to outflow and outperform in even the most demanding environments, these valves deliver reliable performance from mild street builds to 1000+ horsepower race applications.

Key Features:

• Race Series stainless steel alloy construction for exceptional strength and durability
• Chrome-plated stems provide a durable, corrosion-resistant finish
• Swirl-polished underheads promote improved flow characteristics
• Fully hardened tips for long-term wear resistance
• Completely machined combustion faces ensure precise sealing surfaces
• Closely controlled margin heights for consistent performance across all six valves
• Exact stem-to-seat concentricity for superior seating and sealing
• Extreme Duty exhaust material option — Manley's Extreme alloy delivers greater hot hardness and high-temperature strength, ideal for heavily boosted applications with extreme exhaust gas temperatures

Manley's Sport Compact exhaust valves are built to handle everything from spirited street driving to competitive drag racing and drifting events. The Race Series alloy construction ensures these valves maintain structural integrity and flow performance under severe thermal and mechanical stress, making them a trusted upgrade over OEM valves in high-performance and forced-induction builds.

Set includes: 6 exhaust valves