Well I don't know about the lst, but I tried a set of sway bars on my maxx several years ago. They helped the handling a lot when running hard in to the corners, I could almost go in wot and keep the wheels planted. However they limited suspension travel on the jumps, and the landings suffered because of it. If you are going to be running on a flat track, they should be really nice. But if you plan on jumping with them on I think you will be disappointed.