Product Details
Harley Davidson Fat Bob with Big Twin Engine 1984, High Performance Hydraulic Tappets by S&S Cycle®. Reduced valve train noise from start up to shut down.Close tolerances for low leak down rates; fast pump up and superior high-RPM performance. Low mass, bearing grade, silicone nitrate check ball and lighter check ball spring; enhances fast pump up and quiet operation. 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 0.123 larger in diameter than the raceless roller axles currently used by some manufacturers.
Features
- 100% tested to ensure that leak down and top end oil flow are within specification
- Available with or without the HL2T limited travel kit installed
- Precise engineering ensures the latest in quality
- Expertly manufactured from highly reliable materials
- Rigorous quality control and great functionality
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.
Founded in 1958, S&S Cycle® has been providing high performance motorcycle parts for Harley-Davidson® and other v-twin motorcycles for over 55 years. Starting with a simple offering of light weight pushrod kits, the S&S motorcycle performance product line has grown to include exhaust systems, camshafts, carburetors, fuel injection systems, stroker kits, big bore kits, cylinder heads, service replacement parts and complete motorcycle engines for both vintage and modern v-twins.