What is included in this Supertech dual spring kit?

This kit includes the dual valve springs, retainers, and valve locks needed for your Subaru EJ20 or EJ25 engine. It is a comprehensive package for upgrading your valve train.

What is the purpose of dual valve springs?

Dual valve springs offer improved stability and control at higher engine speeds and RPMs. They help prevent valve float, ensuring that the valves close properly and consistently, which is crucial for performance builds.

What are the key specifications for these springs?

These springs are rated for 64 lbs of seat pressure and are designed for a 36mm installed height. These specifications are important for matching with specific camshafts and ensuring proper valve train operation.

Supertech Subaru EJ20/25 Dual Spring Kit SPRK-TS1015-SUB4-ST

Name: Supertech Subaru EJ20/25 64lbs/36mm Dual Spring Kit
Brand: Supertech
SKU: supertech-supertech-subaru-ej20-25-64lbs-36mm-dual-spring-kit-t14-711791
Price: 585.42 USD
Availability: BackOrder

Supertech Subaru EJ20/25 64lbs/36mm Dual Spring Kit

$585.42

On Backorder

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

Supertech Subaru EJ20/25 64lbs/36mm Dual Spring Kit

Key Features

This kit includes dual valve springs, retainers, and valve locks for Subaru EJ20 and EJ25 engines.
Springs are rated for 64 lbs of seat pressure.
Designed for a 36mm installed height.
Dual spring design helps prevent valve float at higher RPMs.
Suitable for performance builds with more aggressive camshafts.

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Product Details

This Supertech dual spring kit for Subaru EJ20 and EJ25 engines includes everything you need to upgrade your valve springs: the dual springs themselves, retainers, and valve locks. This kit is designed to handle more aggressive camshaft profiles and higher RPMs, making it a solid choice for performance builds where the stock springs might not keep up. The dual spring design offers improved stability at high engine speeds, helping to prevent valve float and ensure consistent valve train operation.

Supertech uses well-built materials for their performance components. These springs are rated for 64 lbs of seat pressure and 36mm of installed height, which are key specifications for matching with specific camshafts and ensuring proper valve control. The kit comes with the necessary retainers and locks, simplifying the installation process by providing a complete set for your cylinder heads. Proper installation is crucial for performance and longevity, so be sure to follow the manufacturer's guidelines for setting valve spring installed height and checking for clearance with your camshafts.

When rebuilding the top end of your EJ20 or EJ25, especially for a performance application, upgrading the valve springs is a critical step. This Supertech kit offers a comprehensive solution, providing the springs, retainers, and locks needed to support increased engine performance and reliability at higher RPMs. Ensure you have the correct tools and procedures in place for valve spring installation, as this is a job that requires precision and attention to detail.