517720 52-85 XL solid tappet assembly. standard size

For Sportster owners running a solid lifter setup, this MCS tappet assembly is a dependable choice. It is designed to fit 1957 to 1985 XL Sportster models and comes as a complete unit including the roller. This standard-size lifter is an OEM style reproduction that serves as a direct replacement for OEM 18508-52B. Maintaining the valvetrain on an Ironhead is essential for engine longevity, and replacing worn tappets is a key part of that process. These assemblies are built to withstand the high-revving nature of the Sportster engine while providing the precise lift and timing required for peak performance. It is a straightforward replacement that helps maintain the mechanical integrity of your classic Sporty.