Manley Extreme Duty Stainless Steel - Exhaust Valves (EJ20, EJ25)

In certain specific applications, Manley offers our "Extreme Duty" exhaust material. Our "Extremealloy" alloy offers more hot hardness and high temperature strength than our competitors' offerings. This alloy is ideal for extremely high boosted applications where the exhaust gas temperatures reach what seem like unthinkable levels. Manley stainless valves are suitable for all applications ranging from the mild street performer to the jaw dropping 1000+ horsepower race cars competing at the drag strip or drifting events.

Specifications

• Head Diameter:     32mm or 33mm
• Stem Diameter:     5.96mm/.2345" 
• Installed Height:     Stock
• O/A Length:     104.75 mm
• Tip Length:     3.5 mm
• Underhead Angle/Radius:     25° x 11/32"
• Margin:    .060
• Seat Width:     .080"
• Top of Head:     20° Dish