After riding this bike around for awhile I decided it was a bit loud . I was searching e bay one day and came across this kx 65 muffler that I got real cheap. When I got it was a bit long so I cut off about 2 inches size isn't everything lol . I repacked it with some muffler packing I had made a new mount and spun a aluminum end where the tube joins it to make it a little lighter. What a difference in sound I think the clutch is louder then the exhaust now lol . I threw on a FMF sticker I had laying around for fun what do you think .