I need a trailer hitch type bike rack for my 2020 RDX. (I'm too old and too short to put my bike on the roof). Can I go to any reputable bike shop for a hitch and rack? Acura doesn't seem to offer one - plus I would rather not pay the typical Acura mark-up on a commonly available item. I have a great local bike shop. I just don't want to do anything to void my Acura warranty. Any suggestions? Thanks.