Would have to think that the spark arrester was plugged solid, never seen that before. I have plugged my quad exhaust off to the point that it didn't sound right.
i was riding it on pigeon lake full out and it just started getting louder and louder.parked it in the garage walked by the next morn i noticed the back half was gone ,from the colour on the sticker it must have gotten pretty hot, i checked the spark arrestor 2 rides ago and it was clean
the pipe only has 200 k on it,its a racing pipe it should be made to go balls to the wall