Yeah Yoshi's aren't very loud at all,i have a Scorpion bolt on and it's very ballsy sounding,like an actual 1000 cc bike it has a "wamp wamp" sound lol if that makes senseMy girlfriend has a carbon fiber Leo Vince slip on under-tail on her 600. It has a beastly deep growl to it. Nice scream up high too. I have a yoshi slip on my 929 and when they are idling next to each other hers completely drowns out mine. Also it weighs next to nothing so there would be a substantial reduction. If I didn't get such a good deal on mine I would have got a carbon fiber exhaust.