XL finned header clamp set is investment cast aluminum with a vibration finish on a shot peen natural surface.
Fits : 1957-85 Ironhead Sportster
*NOTE: Tighten set with 5/16" allen screws that are provided, the front and rear are the same.
*NOTE: Due to the position of the bolt on the front header clamp and limited space it may require 5/16"-18 1" hex nut alternative hardware. You can also drill out threading and use hex bolts and locknuts.