ok, i have a fmf rev pipe and it is ok for open riding but in the woods it sucks because of no bottom end, i was thinking about getting the sst, cause it has bottom and helps on top. but i can get a complete pro circuit for about 80 bucks more, than just the sst pipe by itself. and the pro circuit helps the most from bottom to mid with some on top. i have heard that fmf holds back power but that was on a banshee, and pro circuit was a lot better. any replies would be appreciated.