What is the primary benefit of a dual spring kit for drag racing?

A dual spring kit offers increased stability and control over valve motion at high RPMs. This helps prevent valve float, ensuring valves stay seated and reducing the risk of engine damage during intense drag racing conditions.

What other components are typically needed when installing these valve springs?

When installing high-performance valve springs like these, it's often recommended to use compatible camshafts, retainers, and valve seals designed for racing applications. Always refer to the manufacturer's installation guide for specific recommendations.

Are these springs suitable for daily driving?

This Ferrea spring kit is specifically engineered for drag racing applications and high-RPM performance. While they can be installed in an EJ20, they are optimized for the extreme demands of the track rather than everyday street use.

Ferrea Subaru WRX EJ20 Dual Spring Kit KT4017

Name: Ferrea Subaru WRX EJ20 Drag Racing Dual Spring Kit
Brand: Ferrea
SKU: ferrea-ferrea-subaru-wrx-ej20-drag-racing-dual-spring-kit-t14-418940
Price: 1089.51 USD
Availability: BackOrder

Ferrea Subaru WRX EJ20 Drag Racing 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 EJ20 Drag Racing Dual Spring Kit

Key Features

Fits Subaru WRX EJ20 engines.
Designed for drag racing applications.
Dual spring design for enhanced valve control.
Constructed with high-strength materials for durability.
Helps prevent valve float at high RPMs.
Part number KT4017.

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Product Details

If you're building a Subaru WRX EJ20 for serious drag racing, controlling valve float at high RPMs is critical. This Ferrea dual spring kit, part number KT4017, is designed specifically to handle the demands of competition engines pushing past stock limits. These springs work to keep your valves securely seated, even when the engine is screaming at redline, which is essential for preventing catastrophic engine damage and maintaining consistent power delivery down the track.

Ferrea is known for making well-built valvetrain components, and this kit is no exception. It uses high-strength materials selected for their ability to withstand the intense forces and heat generated in a race engine. The dual spring design offers a more robust solution than single springs, providing increased stability and control over the valve motion. This setup is intended for drag racing applications where sustained high-RPM operation is the norm, and reliability under extreme stress is paramount. You'll want to ensure your camshafts and retainers are compatible with this type of high-performance spring setup to get the most out of the kit.

When installing this kit, it's important to follow the manufacturer's recommended procedures carefully. Proper installation is key to achieving the intended performance and durability. This kit is a significant upgrade for any EJ20 engine built for the track, offering the peace of mind that comes with using specialized components designed for extreme conditions.