Supertech Titanium Retainer for Honda Spring 6.6mm Valve 6 Degree for Mitsubishi 4G63 Keeper

Supertech is known for making performance valvetrain components, and this titanium retainer is a good example of their work. It's designed to work with 6.6mm Honda valve springs and 6-degree Mitsubishi 4G63 valves, making it a specific piece for certain engine builds. Using titanium here helps keep the valvetrain weight down, which can lead to improved performance and reliability at higher RPMs.

This retainer is a well-built part that uses titanium, a strong yet lightweight material. It's a direct replacement for the stock retainer, assuming your build uses the specified spring and valve angle. When you're putting together a performance engine, every bit of weight savings counts, especially in the valvetrain where rotating mass can affect how quickly the engine revs and how stable it is at high speeds.