i've come to one conclusion, when lugging around in any gear that terrable sound can be heard. It has to be chain related. if a tranny made this much noise I,m sure it would be locked up by now. actually the white bros. pipe fixes this sound quite well. if it is the chain slappin is there any aftermarket chain tensioners that can be put on without hassle to eliminate this sound. or if it isn't the chain then what is it? and how did you fix it? I'm not stupid, I just figured if one of you already had the answer then no sense in me trying to figure it out. thanks guys