What is the maximum lift this valve spring kit can handle?

This Manley valve spring and retainer kit is designed for a maximum valve lift of .525 inches. It's built to work with aggressive aftermarket camshafts.

Does this kit include valve locks?

No, this specific Manley kit (part number 26180) does not include valve locks. You will need to purchase those separately if your project requires them.

What makes titanium retainers beneficial?

The titanium retainers are heat-treated and CNC machined for accuracy. They are also lighter than steel retainers, which helps reduce the overall mass in the valvetrain, allowing for better performance at high RPMs.

Specifications

Brand: Manley Performance
Part #: 26180
UPC: 807298044972

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

Name: Manley Subaru WRX/STi Valve Spring and Retainer Kit (w/o Valve Locks) (16 each)
Brand: Manley Performance
SKU: manley-performance-manley-subaru-wrx-sti-valve-spring-and-retainer-kit-w-o-valve-t14-15208
Price: 372.04 USD
Availability: InStock

$372.04

Only 4 left in stock

Fits 2002-2012 Subaru Impreza. Manley valve spring and titanium retainer kit designed for high-RPM performance.

Key Features

Fits 2002-2012 Subaru Impreza and 2005-2006 Saab 9-2X.
Includes 16 chrome-silicon alloy valve springs and 16 heat-treated titanium retainers.
Designed to handle aggressive aftermarket camshafts and engine speeds up to 10,000 RPM.
Springs offer exceptional fatigue resistance and high tensile strength for consistent valve control.
Titanium retainers are CNC machined for precision and help reduce valvetrain weight.
Rated for a maximum valve lift of .525 inches.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

If you're building a performance Subaru WRX or STI and need to handle aggressive aftermarket camshafts and high engine speeds, this Manley valve spring and retainer kit is a solid choice. It's designed to keep your valvetrain stable and precise, even when you're pushing the engine hard, up to 10,000 RPM.

These kits use chrome-silicon alloy springs, which are well-built for excellent fatigue resistance and high tensile strength. This means they can maintain consistent control over the valves at extreme RPMs. The retainers are made from heat-treated, aerospace-grade titanium and are CNC machined for accuracy, helping to reduce overall valvetrain weight. This kit is specifically designed to work with aftermarket camshafts, ensuring your engine can perform reliably at higher speeds.

This particular kit includes 16 springs and 16 titanium retainers. It does not include valve locks, so you'll need to source those separately if your project requires them. The springs are rated for a maximum lift of .525 inches.