SIR Performance Valve Springs and Titanium Retainers for R35

Description

Here is what we use here in our SiR engines for Valve springs and Titanium retainers.  

Specially developed for increased travel to keep the valve train away from coil bind 

Includes 

12pc Exhaust Valve Springs

12pc Intake Valve Springs

24pc Titanium Retainers

This setup is designed to work with the OEM valve spacers on the bottom as well as OEM keepers  

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