JACK STRAW
10-27-2013, 05:47 PM
we were at Wildwood this weekend and my son raced the trx250r and our fmf fatty sst exhaust has about a 1' head pipe on it. other 250's I saw had no head pipe. I couldn't find them later to ask them or see the brand. so what are the performance differences. another guy told me that the stock expansion chamber and the pro circuit pipes were the best. can I get some info. thanks