Siiiiiiiiick Kings, BRAH!
Sound proofing and carpet will help a little bit. Headphones or blasting Metallica will help the most.
When go-fast newbies(like my old decrepit parents, for instance) ride with me, I always say: “You are going to hear lots of clicking, creaking, clanking, and squeaking. That’s normal. Tighten your straps after a minute or two and let me know if you think you’re going to vomit”