I remember at a local Polaris dealer open house about 10 years ago, a guy had a Polaris Sport 400 there for demo and to showoff to people. But anyways he had it setup for motocross and this thing was sick as hell...They took a shitload of stuff off it for weight reduction and it was heavily modded. I recall seein him at the county fair racing also, he did alright for being put up against Banshee's, 250R's and Suzuki 2 strokes that were modded aswell...