For stock or high performance, S&S hydraulic tappets offer significant design improvements to withstand the forces, reduce the stress, and solve the possibility of oil starvation. S&S hydraulic tappets feature larger inner bearing races, an improved inner race-roller design, a redesigned and stronger plunger assembly, and revised metering devices for precise oil delivery control. Each lifter body and plunger assembly is hand-fit and then pressure-tested to insure correct operation. Choose the better features of S&S hydraulic tappets for better performance.
S&S Hydraulic Tappets fit all Harley-Davidson Evolution Big Twin engines
These tappets feature numerous significant design improvements and are perfect for stock replacement as well as high performance applications.
Larger inner bearing race reduces stresses to increase axle, bearing, and roller life.
The S&S inner bearing race is .123" larger in diameter than the "raceless" roller axles currently used by some manufacturers.
Improved inner race-roller design allows use of more, and larger bearings to increase load-carrying surface area, further reducing stress and wear in the critical roller area.
Redesigned plunger assembly better withstands forces associated with heavy-duty valve springs and cams typically used in high-performance applications.
Revised metering device precisely controls oil delivery to top end, insuring rapid lifter pump-up and reducing possibility of oil starvation to bottom end.
Each lifter body and plunger assembly is hand-fit and then pressure-tested to insure correct operation.
Manufacturer's Part Number:33-5352
Notes:Does not have travel limiter.
Quantity:Sold as a set of 4.