Manley Performance Race Series Exhaust Valves for Subaru WRX and STI – Part Number 11171-8

Description

Upgrade your Subaru WRX or STI with the Manley Performance Race Series Exhaust Valves, designed to deliver exceptional durability and performance under demanding racing conditions. Constructed from high-quality stainless steel, these valves are engineered to withstand the intense stresses of bracket, drag, and oval track racing, making them the ideal choice for engines operating under 8,000 RPM. The chrome stems and hard tips enhance wear resistance and longevity, ensuring consistent performance over time. Fully machined combustion faces and swirl-polished under-head areas optimize airflow and combustion efficiency, helping your engine breathe better and produce more power. Whether you’re tuning for maximum airflow or seeking reliable performance in alcohol-fueled engines, these valves are designed to meet your specific needs. Available in various shapes, including Race Master (straight stem) and Race Flo, they can be tailored to your engine’s unique requirements, ensuring optimal fit and function. These exhaust valves are recommended for high-performance applications on Subaru models from 2002 to 2009, including Impreza, WRX, and STI variants. Built to meet the rigorous demands of racing, they are a proven upgrade for enthusiasts seeking to enhance engine responsiveness and durability across a range of competitive motorsports.

Features:

• Stainless Steel Construction: Ensures durability and resistance to wear in high-performance environments.

• Chrome Stems and Hard Tips: Provide enhanced longevity and wear resistance for extended use.

• Swirl Polished and Fully Machined: Improves airflow and combustion efficiency for optimized engine performance.

• Variety of Shapes: Options include Race Master (straight stem) and Race Flo to suit different engine configurations.

• Recommended for Alcohol Engines: Designed to withstand the demanding conditions of alcohol-fueled racing engines.

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