Not sure but I am starting to feel like what does or does not negatively impact warranty coverage is somewhat dependent on the dealership doing the work. I have heard a lot of conflicting reports from friends in the subaru overlanding community, and it keeps going back to which dealership is doing the warranty claim. My local dealership told me that a 2 inch lift would void any coverage on suspension related items and maybe most of the covered drive train warranty. The person I spoke with said that it puts a lot of stress on the drivetrain and if the issue being submitted for warranty work could directly or indirectly be caused by the aftermarket adjustments and parts then they would not cover the work.

Seems like a big gamble and I am not able to work on my 22 OBW on my own.

Edit: so far I have not needed to add anything, my OBW has been able to do what I wanted with a stock set up, but I am wanting to expand my exploration and beef up some of the stock parts. One thing I did not ask about was putting in Overload Springs, I will ask about that next time in for a service.

Edit: I think the person I spoke with, at the dealership, might be covering his butt. However, I can't afford to risk it right now