oldhippie
Senior Member
I agree with Glider on this. I think that the HD filters for use on the TCs are the way to go. On the older bikes (EVOs and earlier), other quality filters may be fine. But the 5 micron spec is tough. I have not found out who makes those for HD, and if they can be purchased directly.
TQ
The HD SuperPremium5 is made by Champion Labs. I posted the email communication I had with them under Oil Related Tips > Oil Filter Comparisons.
(Sorry not sure how to put in the link to that thread)