Ferrea Nissan TB48DE Single Spring 6 Deg Pro CNC Titanium Retainer - Set of 24

This set includes 24 Pro CNC titanium retainers from Ferrea, specifically made for Nissan TB48DE engines using single valve springs with a 6-degree lock angle. These retainers are a key component in managing the valve train's high-speed operation, especially in performance applications where the stock components might not hold up.

Crafted from aerospace-grade titanium, these retainers are significantly lighter than their steel counterparts. This reduction in mass is crucial for high-RPM engines because it lessens the inertial forces on the valve springs. Less inertia means the springs can return to their seat more quickly and accurately, preventing valve float and ensuring consistent valve control even when the engine is pushed hard. The CNC machining ensures precise dimensions and a smooth finish, which helps maintain the integrity of the valve spring and seal during operation. Ferrea is known for making well-built components that can handle the stress of demanding engine builds.

When rebuilding or modifying a Nissan TB48DE engine, especially for performance, using lightweight, strong components like these titanium retainers can make a notable difference in the engine's ability to rev freely and reliably. This set is designed to work with single valve springs and the specified 6-degree lock angle, so be sure this matches your build plans.