Flipping the axle voids warranty on a Winnebago 1706FB ??

I dont know if Magnuson–Moss Warranty Act covers travel trailers, or just motor vehicles, but it provides protection for the consumer in that the warrantor has to prove that modifications were the direct cause of a failure before they can deny a warranty claim.

With that said, mod at your own risk, just have it done by someone who knows how to do it and do it properly and you will be fine.