New from our mates at Old-Stf, these neck cup sets convert 1952-77 Sportsters to fit a wide variety of big twin and aftermarket front ends. No welding or machining work required. This kit converts old ball bearing XL cups for 7/8 stem front end to 1" stem front ends with Timken bearings. Also compensates for neck height increase. Comes in raw steel with bearings and races. All made in USA and very handy indeed!