These tappets have undergone extensive development to increase load, lubrication, hydraulic and life capacities
Increased roller width
Roller perpendicularity held to .0002"
Hand-honed hydraulic unit cavity
Dynamic load capacities increased over 30%
Lubrication capacities for hydraulic unit and valve train (top end) increased 10%
Lubrication capacities for the roller, cams and cam bearings have increased 100% for increased cooling
Made in the U.S.A.