Manley 11378-1 Sport Compact Race Series Stainless Steel Performance Valve

The Manley 11378-1 Sport Compact Race Series valve is precision-engineered from premium stainless steel alloy for exceptional performance in high-stress racing environments. Designed for sport compact applications, this valve delivers superior flow characteristics and durability that exceed OEM specifications.

Premium Construction Features:

• Race Series stainless steel alloy for maximum strength and heat resistance
• Chrome-plated stem for reduced friction and extended wear life
• Swirl-polished underhead for improved airflow and reduced turbulence
• Fully hardened tip for durability with aggressive valve train systems
• CNC-machined combustion face for precise sealing and heat dissipation
• Controlled margin height for optimal strength-to-weight ratio
• Precision-ground stem with exact concentricity to valve seat

Performance Benefits:

• Pro-Flo stem design reduces weight while increasing flow in critical fillet area
• Enhanced thermal stability for high-boost and elevated-EGT applications
• Suitable for street performance, road racing, drag racing, and drifting
• Proven performance in builds ranging from 500 to over 1000 horsepower

Manley valves are manufactured to exacting tolerances and inspected to ensure consistent quality. Whether you're building a weekend warrior or a full competition engine, Manley Race Series valves provide the reliability and performance advantage needed at the cutting edge of sport compact racing.