Supertech Titanium Retainer for SPR-H1000 / 6.6mm Valve Stems - Set of 8

If you're rebuilding the top end of your engine and looking to shave some weight off the valvetrain, these Supertech titanium retainers are a solid option. They're designed to work with Supertech's SPR-H1000 valve springs and are specifically made for 6.6mm valve stems. Reducing the mass at the top of the valve stem helps the valvetrain respond more quickly to changes in engine speed, which is especially important when you're pushing the engine hard.

These retainers are made from titanium, a material known for its strength and light weight. This is a set of 8, so you'll have enough for a typical 4-cylinder engine. Using titanium here not only helps reduce overall engine weight but also contributes to better valvetrain stability at higher RPMs. It's a small change that can make a notable difference in how the engine performs when it's running fast.