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 heavyduty replacement valve springs and cams typically S&S Cycle Hyraused in high-performance applications
S&S Hydraulic Tappet for Harley Davidson 1984-99 XL, Big Twin