What is the benefit of using double valve springs?

Double valve springs provide better control over valve motion, especially at higher engine speeds. This design helps prevent valve float, ensuring valves close reliably even with aggressive camshafts.

Why are the retainers made of titanium?

Titanium retainers are used because they are significantly lighter than steel retainers. Reducing the mass at the top of the valve stem helps the valve spring control valve movement more effectively, particularly at high RPM.

Does this set include everything needed for installation?

This set includes 16 double valve springs and 16 titanium retainers. You will need specialized tools for valve spring installation, such as a spring compressor and a valve spring compressor tool.

Ferrea 4G63T Double Valve Spring Set E11052

Name: Ferrea Mitsubishi 4G63T Double Spring 6 Deg Pro CNC Titanium Retainer - Set of 16
Brand: Ferrea
SKU: ferrea-ferrea-mitsubishi-4g63t-double-spring-6-deg-pro-cnc-titanium-retainer-set-t14-416246
Price: 392.19 USD
Availability: BackOrder

Ferrea Mitsubishi 4G63T Double Spring 6 Deg Pro CNC Titanium Retainer - Set of 16

$392.19

On Backorder

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

Ferrea Mitsubishi 4G63T Double Spring 6 Deg Pro CNC Titanium Retainer - Set of 16

Key Features

Fits Mitsubishi 4G63T engines.
Set includes 16 double valve springs and titanium retainers.
CNC-machined titanium retainers are lightweight and strong.
Double spring design offers improved valve control at high RPM.
6-degree retainer angle is application-specific.
Designed for high-performance engine builds.

Secure CheckoutFast Shipping631-982-0042

Product Details

If you're rebuilding the top end of your Mitsubishi 4G63T engine for serious performance, you'll want to make sure your valve train can keep up. This set of Ferrea double valve springs and titanium retainers is built to handle the demands of high-RPM operation and aggressive camshaft profiles. The double spring design offers improved stability and control over valve motion, especially when dealing with increased lift and duration from performance cams.

These springs are paired with CNC-machined titanium retainers. Titanium is chosen here because it's strong yet significantly lighter than steel, which reduces the overall mass the valve spring has to control. This helps prevent valve float at higher engine speeds, ensuring your valves close reliably. The 6-degree angle on the retainer is specific to certain applications, so double-check your cylinder head requirements. Ferrea is known for making well-built valvetrain components, and this set is a solid option for anyone looking to get the most out of their 4G63T build.

This set includes 16 complete double spring and retainer assemblies, enough for a full engine. Make sure you have the proper tools for installing valve springs, as this is a job that requires specific expertise and equipment to do correctly.