Use this conversion kit when installing a Big Twin or late Sportster 1" neck fork assembly on your early Sportster.
Allows easy installation of our Moto Iron™ springers as well.
Simply remove your existing cups and install these steel cups into your frame neck and you are ready for Big Twin forks.
Includes bearings/races and aluminum dust seals.
Nickel plated cups do not require painting after installation.
Fits 1952-1956 K Model & 1957-1981 Ironhead Sportster
Made In USA