K&N has been my go to along with Mobil1 for decades. My local dealership got the ax from Harley a couple years ago and I picked up a half dozen stock oil filters for about 1/2 price. Think I have one left, then back to the K&N's.I was thinking the same thing... interesting that they both carry the same stock/item number - KN-171C (https://www.knfilters.com/kn-171c-oil-filter).
HiFlo looks to be the same as K&N????