I am looking to put some new shoes on my Hawk XP II and I am having trouble getting a definitive answer from multiple shops! I understand that if I go with >26" ABW on the mains, I may need (paperwork says I DO need) a heavy duty brake upgrade. So, do I need that or dont I? If yes, WHO makes it? I cant seem to find the R172K listed on their double piston systems. I am sure someone here has done this before!

Thanks
Ned

I would give Alaska Airframes a call. I am sure they will have an answer for you.

I havent read the STC instructions but...

If the STC says you need certain brakes then you do.

Unless you get the feds to sign off a field approval on a deviation.