They haven't been made for years. They were a joke. Didn't do squat. Putting new stickers on your bike was more likely to increase power than the roost boost..........
Keith, thanks for the info. I was checking into it for a friend, he has a 2000 RM250. I told him I didn`t think it did much. He wants more power, I told him to go with a Eric Gore big bore kit.