:nocontroli c alot of guys takin off der slip-ons and puttin like a exhaust tip on the end of der bikes! dey are very very loud! i was wonderin if that cuts off on the performance of the bike!?!?! right now i got a d&d slip on... but i like the look of jus the tip but dont want it to cutt off the performance of my bike... let me know pleaseeeeeeeeeee! thanx