V-Thunder™ Tappet Assembly Features an oil metering design that provides uniform metering throughout the entire rpm range
Rollers and axles are manufactured from high-carbon/chromium bearing-quality steel, which is through-hardened for improved wear and load-carrying capability, and the pushrod seat is carbo-nitrided
Each unit is 100% tested for proper function
HIGH ENERGY™ hydraulic roller lifter is a performance replacement for the stock hydraulic roller lifter, which should be used for street applications
PRO-MAGNUM™ hydraulic roller lifter is designed to perform at higher engine speeds, as in race applications, and a slight increase in noise should be expected; unique anti-pump-up retainer is designed to replace the stock spring retainer clip, which precisely limits plunger travel
HY-REV™ hydraulic roller lifter features internal hydraulic check valve, which allows for higher rpm
Made in the U.S.A.
PRO-MAGNUM™ hydraulic roller lifter requires adjustable pushrods