Supertech Titanium Retainer for Honda R18 Spring SPR-1003S

This is a Supertech titanium retainer designed specifically for the SPR-1003S valve springs in Honda R18 engines. Retainers work with your valve springs to keep them seated correctly under the valve cover, ensuring proper valve operation.

Made from titanium, this retainer is notably lighter than stock steel retainers. This reduced mass helps the valvetrain spin more freely, which can be beneficial when you're looking to improve engine response or handle higher RPMs. It's a well-built component that directly replaces the factory part, making installation straightforward if you're already inside the engine to replace valve springs.