I ride pretty much stock shee on the track. I have different tire setup and things like that, but nothing major like engine mods or shocks are axle/a arms. I'll have to go with evil on this one, it DOES beat the shit out of you. It's rough as hell, but I'm getting used to it pretty much. It's just hard to keep up with everyone else when you can't really do huge jumps and cool shit like that without just about killing yourself when landing. However, it can be done. I think theres a stock class at the track, but I run Quad C, only restrictions with that is you can't do 2 of the doubles, but everything else is a go.