Manley Subaru WRX EJ205/STi EJ257 33mm Race Master Exhaust Valves (Set of 8) - 11171-8

Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM

Features

• Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.
• Chrome Stems and Hard Tips: Chrome stems and hard tips are incorporated for enhanced longevity and wear resistance.
• Swirl Polished and Fully Machined: The valves feature swirl polished under head areas and fully machined combustion faces to optimize airflow and combustion efficiency.
• Variety of Shapes: Choose between Race Master (Straight Stem) and Race Flo shapes to suit your racing engine's specific requirements.
• Recommended for Alcohol Engines: These valves are the recommended choice for exhaust valves in alcohol engines, ensuring reliable performance even in demanding conditions.

Specs

• Manley Valve
• Exhaust, Valve-R/M SUBARU WRX 32mm
• Product Market: Sport Compact
• Head Diameter: 33.00
• Valve Head Diameter: 33.00
• Stem Diameter: 0.2345
• Valve Stem Diameter: 0.2345
• O/A Length: 104.75
• Valve Length: 104.75
• Valve Tip Length: 3.50
• Tip Length: 3.50
• Margin Width: 0.060
• Seat Width: 0.100
• Top of Head: 20 Degree Dish
• Valve Head Shape: 20 Degree Dish
• Underhead Angle: 25.00
• Underhead Radius: 11/32
• Valve Series: Race Series
• Valve Sub-Series: Race Master
• Valve Material: Stainless Steel
• Valve Type: Exhaust
• Product Type: Engine Exhaust Valve Kit
• Valve Quantity: 8
• Engine Valve Quantity: 8
• Industry: Automotive