Manley Subaru WRX/STi Valve Spring and Retainer Kit (w/o Valve Locks) (16 each)

Manley Performance Valve spring and Retainer Kits take the guess work out of making your valvetrain race-ready. Engineered for maximum durability, stability, and precision in high-performance and racing applications, these chrome-silicon alloy springs provide exceptional fatigue resistance and high-tensile strength, ensuring consistent valve control at extreme RPMs. Save time and money with these kits, featuring premium springs, retainers, designed to handle aggressive aftermarket camshafts. Max Lift: 0.525" - Spring: 22180-16 - Titanium Retainer: 23180-16 Manley Sport Compatct Valve Spring and Retainer Kit

• Includes matched Valve Springs, Retainers, and Locks (if part number ends in "K"). Spring Locators included in some applications.
• Includes 7 Machined Valve Locks manufactured from the premium quality heat treated steel
• Heat treated aerospace grade titanium retainers CNC machined to exacting tolerances
• Designed to handle aftermarket camshafts and up to 10,000 RPM

The Manley Performance Valve Spring and Retainer Kit is designed to optimize your Subaru WRX/STi's valvetrain for high-performance and racing applications. Crafted with chrome-silicon alloy springs, this kit provides exceptional fatigue resistance and high-tensile strength, ensuring consistent valve control even at extreme RPMs. The kit includes matched valve springs, machined titanium retainers, and premium steel valve locks, offering a comprehensive solution to enhance durability and stability in demanding conditions. Engineered to handle aftermarket camshafts and up to 10,000 RPM, these components help you achieve maximum engine performance with confidence.
The springs are engineered for maximum stability, with a maximum lift capacity of 0.525 inches, making them suitable for aggressive camshaft profiles. The titanium retainers are CNC machined from aerospace-grade material, ensuring precise fit and long-lasting performance under high stress. The included valve locks are heat-treated and manufactured from high-quality steel, providing secure valve retention during high-RPM operation.
This kit is tailored for Subaru Impreza models from 2004 to 2007, offering a reliable upgrade for enthusiasts seeking to improve engine responsiveness and durability. Whether you're building a race-ready engine or enhancing your daily driver, this Manley kit ensures a high level of craftsmanship and performance. Designed for easy installation, it features spring locators for some applications and is compatible with a variety of aftermarket components, making it a versatile choice for high-performance builds.

Features:

• Includes matched valve springs, retainers, and locks for a complete valvetrain upgrade

• Machined titanium retainers crafted from aerospace-grade material for durability and precision

• Chrome-silicon alloy springs with high fatigue resistance and stability at high RPMs

• Designed to handle aftermarket camshafts and engine speeds up to 10,000 RPM

• Maximum spring lift capacity of 0.525 inches for aggressive valve operation

Fitment:
Saab 9-2X Aero 2005
Saab 9-2X Aero 2006
Subaru Impreza WRX 2002
Subaru Impreza WRX 2003
Subaru Impreza WRX 2004
Subaru Impreza WRX 2005
Subaru Impreza WRX 2006
Subaru Impreza WRX 2007
Subaru Impreza WRX 2008
Subaru Impreza WRX 2009
Subaru Impreza WRX 2010
Subaru Impreza WRX 2011
Subaru Impreza WRX 2012
Subaru Impreza WRX Limited 2006
Subaru Impreza WRX Limited 2007
Subaru Impreza WRX Limited 2010
Subaru Impreza WRX Limited 2011
Subaru Impreza WRX Limited 2012
Subaru Impreza WRX Premium 2009
Subaru Impreza WRX Premium 2010
Subaru Impreza WRX Premium 2011
Subaru Impreza WRX Premium 2012
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 2012
Subaru Impreza WRX STI Limited 2007
Subaru Impreza WRX STI Limited 2011
Subaru Impreza WRX STI Limited 2012
Subaru Impreza WRX STI Special Edition 2010
Subaru Impreza WRX TR 2006
Subaru Impreza WRX TR 2007