Blow Off Valves

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
Manley Valve – Exhaust, Valve-VIPER R/M 1.600.

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

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
Manley Valve – Intake, Valve-VIPER R/M 2.020.

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

Moroso Vacuum Relief Valve w/Adjustable Knob – Aluminum – Single

PERRIN 02-07 Subaru WRX / 04-21 STI / 06-08 FXT Bypass/Blow Off Valve – Black

PERRIN 02-07 Subaru WRX / 04-21 STI / 06-08 FXT Bypass/Blow Off Valve – Red

PERRIN 08-14 Subaru WRX / 05-09 LGT & OBXT / 09-13 Forester XT Bypass/Blow Off Valve – Black

PERRIN 08-14 Subaru WRX / 05-09 LGT & OBXT / 09-13 Forester XT Bypass/Blow Off Valve – Red

PERRIN 15-21 Subaru WRX / 14-18 Forester XT Bypass/Blow Off Valve – Red

PERRIN 22-25 Subaru WRX / 20-25 LGT & OBXT / 19-25 Ascent Diverter Valve – Red

Skunk2 Alpha Series valves are manufactured from HNV3 martensitic steel (IN) and EV8 austenitic steel (EX) one-piece forgings, each valve is heat-treated using a proprietary process for extraordinary strength and durability. Alpha Series Valves feature hard chrome plating and fully machined valve heads. Other valves may appear similar, but only Alpha Series Valves feature specially designed valve head profiles to optimize airflow. Skunk2 designs, develops, and tests its entire valvetrain lineup in-house to ensure superior quality and maximum performance gains. During development, each valvetrain component is tested both on the dyno and the road. Manufactured from the best materials available in a state-of-the-art manufacturing environment ensure that Skunk2 valvetrain components provide exceptional performance, reliability, and quality. These components remain standard-issue on each Skunk2 vehicle that we build and support.
Alpha Series Valve Set; Stock Size; Std Compression; Dish Face-Intake 30mm x 118.85mm x 5.48mm/Exhaust 26mm x 116mm x 5.45mm; Head Dia.-Intake/Exhaust 30.00mm/26.00mm; Set of 16;

• Overall Valve Length (Intake/Exhaust) 118.5mm/ 116mm
• Head Diameter (Intake/Exhaust) 30.00mm/ 26.00mm
• Stem Thickness (Intake/Exhaust) 5.48mm/ 5.45mm
• Stainless-Steel Alloy Construction
• Optimum Sealing/Airflow/Stability
• Proprietary Heat Treatment
• 3-10g Lighter Than Stock
• One-Piece Design