S&S CYCLE High Performance Hydraulic Tappets for 1966-99 HD® Big Twins And 1986-'90 HD® Sportster® Models - 33-5353

S&S^® Hydraulic Tappets fit all HD^® Evolution^®, HD^® big twin engines and 1986-'90 Sportster^® models. They also are used in S&S^® engines for 1966&-'84 big twin chassis. These tappets feature numerous significant design improvements and are perfect for stock replacement as well as high performance applications.Features and Benefits: 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. Set of four, with HL2T limited travel kit.

• Rollers have a larger-than-stock inner bearing race that reduces stress and increases axle life
• Each lifter body and plunger assembly is hand-fit and pressure-tested to ensure correct operation
• Redesigned plunger assembly withstands forces associated with heavy-duty valve springs and pushrods typically used in high-performance applications
• Revised metering device precisely controls oil delivery to top end, ensuring rapid lifter pump-up and reducing possibility of oil starvation to bottom end
• HLT Limited Travel Kit improve cold starts and high RPM valve timing accuracy

Fitment Guide

Specs