Ok now I do not want To get into a pissing contest about Shawn personality or anything like that against him. Not into that. But looking st this thread no one has given him any advise that can be applied to a caltrac car. They are a different animal. They could hook good for 5-6 runs then suddenly stand straight up. Tighten the front shocks or take some travel out and you blow the tires off. We have been fighting this problem for a few years. We have been talking to calvert about those bars for over a year and the theory make sense so we were going to try them out. Unfortunately the caltracs are so violent that we broke a wheelie bars on a launch that sent us into a crash.hurt the car and me. So those single wheel thingies are ment to work with them. Calvert has put them on alot of cars with great reviews. Everyone has given him great advise but they cannot be applied to this application. Hope this helps . Jake