Ferrea Nissan RB25DET Double Spring 6 Deg Pro CNC Titanium Retainer - Set of 24

This is a set of 24 Ferrea 6 Degree Pro CNC Titanium Retainers, specifically made for the Nissan RB25DET engine. These retainers are a critical component for your engine's valvetrain, working with the valve springs to keep everything synchronized during high RPM operation. If you're rebuilding or modifying your RB25DET for serious performance, especially if you're pushing the limits of the stock valvetrain or using aggressive camshafts, upgrading your retainers is a smart move to ensure reliability and consistent performance.

Ferrea is well-known for making strong valvetrain components, and these retainers are no exception. They are CNC machined from titanium, which makes them incredibly lightweight compared to steel retainers. This reduced mass in the valvetrain helps to decrease valve float at high engine speeds, allowing your engine to rev more freely and safely. The 6-degree angle is a specific design feature that ensures proper seating with compatible valve springs, maintaining the integrity of the valvetrain under stress. This set includes 24 retainers, enough for a complete engine build.

When installing these retainers, it's important to ensure you are using them with compatible valve springs and retainers. Ferrea designs their components to work together, so pairing these with Ferrea valve springs is recommended for optimal performance and longevity. Proper installation is key to valvetrain health, so if you're not familiar with engine building, consulting a professional mechanic is always a good idea to ensure everything is set up correctly.