What is the primary benefit of using dual valve springs?

Dual valve springs are used to prevent valve float, especially at higher engine speeds or when using more aggressive camshafts. They provide increased spring pressure and better control over valve motion, ensuring the valve closes reliably.

Why are titanium retainers used in this kit?

Titanium retainers are significantly lighter than stock steel retainers. This reduction in mass helps to decrease valvetrain inertia, which improves high-RPM stability and reduces stress on other valvetrain components.

What other parts might be needed when installing this spring kit?

When installing performance valve springs and retainers, it's often recommended to also inspect or replace valve seals and potentially the camshafts themselves, depending on your build goals. Always refer to the manufacturer's installation guide for a complete list of recommended procedures and parts.

Brian Crower FA20/4UGSE-Race Dual Spring Kit BC0651

Name: Brian Crower Subaru FA20 / Toyota 4UGSE-Race Dual Spring and Titanium Retainer & Spring Kit
Brand: Brian Crower
SKU: brian-crower-brian-crower-subaru-fa20-toyota-4ugse-race-dual-spring-and-titanium-t14-181653
Price: 542.00 USD
Availability: BackOrder

Brian Crower Subaru FA20 / Toyota 4UGSE-Race Dual Spring and Titanium Retainer & Spring Kit

$542.00

On Backorder

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

Brian Crower FA20 / Toyota 4UGSE-Race Dual Spring and Titanium Retainer & Spring Kit

Key Features

Fits Subaru FA20 and Toyota 4UGSE engines.
Includes a full set of high-performance dual valve springs.
Comes with a complete set of lightweight titanium retainers.
Dual spring design helps prevent valve float at high RPMs.
Titanium retainers reduce valvetrain mass for improved stability.
Designed for performance engine builds and aggressive camshafts.

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Product Details

This Brian Crower kit gives you everything you need to upgrade the valve springs and retainers on your Subaru FA20 or Toyota 4UGSE engine. Inside this box, you'll find a full set of high-performance dual valve springs, precisely matched to work together, along with a complete set of lightweight titanium retainers. These components are designed to handle the increased demands of a performance-oriented engine build, ensuring your valvetrain stays stable at higher RPMs and under more aggressive camshaft profiles.

Brian Crower is known for making well-built engine components, and this spring kit is no exception. The dual spring design helps prevent valve float, which is crucial when you're pushing your engine beyond its stock limits. The titanium retainers are significantly lighter than stock steel retainers, reducing the overall mass that the valve spring has to control. This not only helps with high-RPM stability but also lessens the load on the valvetrain components. When you're rebuilding the top end of your FA20 or 4UGSE for racing or serious performance, a robust spring and retainer setup like this is essential for reliability and consistent power delivery.

Upgrading your valve springs and retainers is a key step when installing more aggressive camshafts or increasing boost levels. This kit is designed to be a direct replacement for your stock components, but it's always recommended to consult the manufacturer's installation instructions for specific details regarding assembly and proper seating. Ensuring the valvetrain is correctly set up with these performance parts will help you achieve the full potential of your engine build.