Depending on the diameter, check cone engineering, they have lots of bends in all types. I needed the exhaust pipe size which was 60mm . Totally weird size forget but I found tuner stores sell tubing by a company called vibrant. Wasn't cheap but you don't need too much. Def buy more than you think you need, tack it up on the bike and back purge with argon.
We're not out here to rough it. We're here to smooth it . Things are rough enough in town.