Suspension. I did a superman; 6 hooks in my back (they couldn't pull up skin on my legs to run hooks there, so it was a little... awkward.) It was painful, sure. But the pain fades once you're up there, and then it's...
Boring.
You can't really do anything much. You can swing around, but if you get motion sick then that's not a good idea. I know a number of people that have experienced it as transcendental, and it just wasn't for me. Everything was sore for a few days afterwards, but not bad. It just wasn't for me.
It took me multiple reads to realize you weren't talking about dirtbike shocks (suspension), doing dirtbike tricks (a superman), and receiving a back injury (6 hooks in the back). It sounded like you were advocating for people to buy quality suspension components if they're going to do big jumps and tricks on their dirtbike.