the custom exhaust pipe norman is talking about that bob and him made for me i did some testing with it and the stock pipe. i put on the stock pipe yesterday and it took forever to get to 27mph and did not run to good. i put back on the custom pipe norman and bob made for me and i got up to 27mph in 1/3 the distance and got up to at 32.4 mph in less distance then the stock pipe took to get to 27mph. the motor ran smooth for a 2 stroke and the custom exhaust pipe is about 1/3 quieter then the stock pipe. now that is one heck of a performance difference
