• Manley Performance 0.490in Valve Spring and Retainer Kit | Subaru WRX/STi (16) (26185)
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Manley Performance 0.490in Valve Spring and Retainer Kit | Subaru WRX/STi (16) (26185)

Manley Performance 0.490in Valve Spring and Retainer Kit | Subaru WRX/STi (16) (26185)

26185

In stock

$532.99 USD
$561.04 USD $532.99 USD
ADDITIONAL DISCOUNTS APPLIED AT CHECKOUT Sold out

The Manley Performance Subaru WRX/STi .490 inch Valve Spring and Retainer Kit is a high-performance valvetrain component designed to enhance engine stability and durability. Crafted from chrome-silicon alloy, these springs are engineered for maximum fatigue resistance and high-tensile strength, making them ideal for high-revving and racing applications. The kit includes premium springs and retainers that provide consistent valve control under extreme conditions, reducing the risk of valve float and ensuring reliable engine operation at elevated RPMs. Built for performance, these components help optimize valvetrain stability, improve power output, and support aggressive camshaft profiles.

This kit is compatible with Subaru WRX and STI models, suitable for engines requiring .490 inch valve springs. It is intended for use in high-performance and racing setups, where durability and precision are critical. The installation involves replacing existing springs and retainers with these race-ready components, offering a direct upgrade for enthusiasts seeking to maximize engine performance. The kit contains 16 springs and retainers, making it suitable for complete valvetrain upgrades or rebuilds focused on street, track, or competition use.

Overview

Manley Performance Valve Spring and Retainer Kits

Fitment Summary

Part #: 26185

Overview

The Manley Subaru WRX/STi .490in Valve Spring and Retainer Kit is a high-quality upgrade designed for enthusiasts and racers seeking reliable valvetrain performance. Crafted specifically for Subaru WRX and STI engines, this kit includes 16 chrome-silicon alloy springs and retainers engineered to withstand the rigors of high RPM operation and aggressive camshaft profiles. Whether you're building a race-ready engine or enhancing your vehicle's durability under demanding conditions, this kit provides the stability and precision necessary for optimal valve control and engine performance. This kit is ideal for those looking to improve valvetrain reliability, support high-performance camshaft upgrades, and ensure consistent engine operation at elevated speeds. Its durable materials and precision engineering help maintain valve timing and prevent float, contributing to overall engine efficiency and longevity.

Key Features

This valve spring and retainer kit offers several key benefits:
  • Constructed from chrome-silicon alloy for exceptional fatigue resistance and high-tensile strength
  • Designed to handle high RPMs and aggressive camshaft profiles
  • Includes 16 springs and retainers, providing a complete upgrade for Subaru WRX/STi engines
  • Engineered for maximum durability and stability in racing and high-performance applications
  • Supports consistent valve control and precise engine timing

Construction & Design

The springs are made from chrome-silicon alloy, a material known for its excellent fatigue life and resistance to wear under extreme conditions. The retainers are precision-machined to ensure a secure fit and optimal valve seating, contributing to the overall robustness of the valvetrain.

Performance & Response

Designed to maintain stable valve operation at high engine speeds, these components help prevent valve float and ensure accurate valve timing. This results in improved engine response, smoother operation, and enhanced durability during high-performance driving.

Installation & Fitment

Installation requires removal of existing springs and retainers, with proper compression tools recommended. This kit is designed specifically for Subaru WRX and STI engines, ensuring a direct fit and straightforward upgrade process.

What’s Included

The package includes 16 chrome-silicon alloy springs and 16 retainers, providing a complete set for a typical engine rebuild or upgrade.

Ideal For

This kit is perfect for Subaru WRX/STi owners and racers aiming to support high-performance camshaft upgrades, improve valvetrain durability, and achieve consistent engine operation at elevated RPMs.
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