39mm fork internal

[farmall]

Thank you sir. will see if someone can confirm this conclusion at HD

The drawing confirms it by showing the part and location (nomenclature isn't always function, it should have been called a spacer) and PVC spring spacers have been used to set spring preload long before Evo engines existed. Progressive includes them in many HD kits.

http://partsfinder.onlinemicrofiche....ORK%20ASSEMBLY