Manley Performance Race Series Exhaust Valves for Subaru WRX and STI - Part Number 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 Manley Valve - Exhaust, Valve-R/M SUBARU WRX 32mm.

• 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.

Upgrade your Subaru WRX or STI engine with the Manley Performance Race Series exhaust valves, designed specifically for high-performance racing applications. Crafted from high-quality stainless steel, these valves deliver exceptional durability and resistance to wear, making them ideal for engines operating under demanding conditions. The valves feature swirl polished under-head areas and fully machined combustion faces, which help optimize airflow and improve combustion efficiency for increased power and performance. Their chrome stems and hard tips further enhance longevity, ensuring reliable operation over extended use. Built to meet the rigorous standards of bracket, drag, and oval track racing, these valves are suitable for engines operating under 8000 RPM, providing a reliable upgrade for both stock and modified setups. The set includes eight valves, with options for Race Master (straight stem) or Race Flo shapes, allowing racers to select the best fit for their specific engine configuration. These valves are recommended for alcohol-powered engines, ensuring optimal performance even under demanding racing conditions. Designed for easy installation, the Manley Subaru WRX and STI exhaust valves support your engine's performance goals while maintaining durability and efficiency. Whether you're building a competitive race engine or upgrading your stock setup for better airflow, these valves are a trusted choice for serious racers and enthusiasts alike.

Features:

• Designed for engines operating under 8000 RPM, providing reliable performance in racing conditions

• Made from high-quality stainless steel for exceptional durability and wear resistance

• Swirl polished under-head areas and fully machined combustion faces for optimized airflow and combustion

• Chrome stems and hard tips enhance longevity and resistance to wear

• Suitable for alcohol engines, ensuring consistent performance in demanding environments

• Available in Race Master (straight stem) and Race Flo shapes to match specific engine requirements

• Part of Manley's Race Series valves, engineered for bracket, drag, and oval track racing

Fitment:
2002 Subaru Impreza WRX
2003 Subaru Impreza WRX
2004 Subaru Impreza WRX
2004 Subaru Impreza WRX STI
2005 Subaru Impreza WRX
2005 Subaru Impreza WRX STI
2006 Subaru Impreza WRX STI
2007 Subaru Impreza WRX STI
2007 Subaru Impreza WRX STI Limited
2008 Subaru Impreza WRX STI
2009 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI
2010 Subaru Impreza WRX STI Special Edition
2011 Subaru Impreza WRX STI
2011 Subaru Impreza WRX STI Limited

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: false
Units Per Sku: 1