What is the primary benefit of a dual spring kit?

A dual spring kit, like this Ferrea KT4019, is designed to prevent valve float at high engine speeds. This ensures more precise valve control, which is crucial for performance engines that operate under increased stress and higher RPMs.

What vehicles is this spring kit designed for?

This Ferrea dual spring kit is specifically designed for turbocharged Subaru WRX STI models. It is intended to replace the stock valve springs in these performance-oriented vehicles.

Does this kit include everything needed for installation?

This kit contains the dual valve springs themselves. It is recommended to consult the manufacturer's installation instructions to determine if any additional hardware, tools, or components are required for a complete and proper installation.

Ferrea Subaru WRX STI Turbo Dual Spring Kit KT4019

Name: Ferrea Subaru WRX STI Turbo Dual Spring Kit
Brand: Ferrea
SKU: ferrea-ferrea-subaru-wrx-sti-turbo-dual-spring-kit-t14-418942
Price: 1089.51 USD
Availability: BackOrder

Ferrea Subaru WRX STI Turbo Dual Spring Kit

$1089.51

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Ferrea Subaru WRX STI Turbo Dual Spring Kit

Key Features

This kit includes the Ferrea Subaru WRX STI Turbo Dual Spring Kit.
Designed for turbocharged Subaru WRX STI models.
Features a dual spring design to handle high RPMs and increased stress.
Made from high-strength materials for durability in performance engines.
Helps prevent valve float at high engine speeds.
Aims for a direct fit replacement for stock valve springs.

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Product Details

This kit includes the Ferrea Subaru WRX STI Turbo Dual Spring Kit, designed to replace your stock valve springs. This is a critical component for anyone looking to build a high-performance engine for their turbocharged Subaru WRX STI. The dual spring design is key to handling the increased stresses and higher RPMs that come with a performance turbo setup.

Ferrea is known for making well-built valvetrain components, and this dual spring kit is no exception. The springs are made from high-strength materials to withstand the demanding conditions inside a performance engine. This dual spring setup helps prevent valve float at high RPMs, ensuring that your valves open and close precisely as the camshaft dictates. This improved valve control is essential for making consistent power and maintaining engine health under aggressive driving. The kit is designed to work with the specific valvetrain geometry of the Subaru WRX STI turbo engines, aiming for a direct fit replacement.

When undertaking a performance engine build on your WRX STI, upgrading the valve springs is a necessary step to support increased boost pressure and higher redlines. This kit provides the components needed to achieve that goal, ensuring your valvetrain can keep up with the demands of a modified turbo engine. Always refer to the manufacturer's installation instructions for proper setup and any additional components or tools required for installation.