Manley Performance is a premier manufacturer of high-performance engine components, specializing in forged pistons, connecting rods, crankshafts, and valvetrain parts built for extreme horsepower applications. Proudly made in the USA, Manley combines advanced engineering with precision manufacturing to deliver race-proven durability and reliability for street, drag, and motorsport engines. With a legacy spanning over 50 years, Manley Performance is trusted by professional engine builders and racing teams worldwide to push the limits of performance. Whether for high-horsepower street builds or championship-winning race cars, Manley provides the strength and innovation needed to dominate the competition.
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.
This Part Fits:
Fitment Years: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012.
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.
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2005-2006 | Saab | 9-2X | Aero |
| 2002-2012 | Subaru | Impreza | WRX |
| 2006-2007,2010-2012 | Subaru | Impreza | WRX Limited |
| 2009-2012 | Subaru | Impreza | WRX Premium |
| 2004-2012 | Subaru | Impreza | WRX STI |
| 2007,2011-2012 | Subaru | Impreza | WRX STI Limited |
| 2010 | Subaru | Impreza | WRX STI Special Edition |
| 2006-2007 | Subaru | Impreza | WRX TR |
Fitment Years: 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012.
- Category:
- Engine Components>Valves
- Core:
- N
- Core Price:
- 0
- LTL:
- N
- MPN:
- 11155-8
- Proposition 65:
- Y
