I drive fast on the trails and my uforce bottoms out a lot in the rear end, when going over bigger bumps,
does any one know of a good 2 or 3 inch lift kit. not the shock spacers either.
Thanks

Have you tried adjusting the shock preload?

[2015 Z Force 800 53/Trail EPS]

I'd be a little careful on the UForces. They are a shorter swing-range system like the trails and don't like to be lifted much.