Note: Maximum Recommended Lift = .590in.
* High Performance Spring Kit
* Silicon & Vanadium alloy spring wire
* Increased travel before coil bind
* Complete Kit includes: springs, retainers, keepers & lower collars
* Rocker box clearance must be checked
* Spring travel must be checked
* Valve timing must be accurate
** Over revving will lead to pre-mature failure of Valve Springs & collars.