I would like to give it a try, but due to work scheduling I don't race now so I have not talked to the local track owner about it. I have a gold tub RC10 that I brought to a practice night months ago and it was great fun, with new batteries (lighter) and even a 27t in it held its own with some of the buggies out there. The ball cups where pretty brittle and every little tap of the wall I would bust one. But if I can get up there to race sometime this winter I will run the old buggy and give my boy the B4 to run.