Stock Exhaust FYI

[airdreams1]

Here is why the stock YSR exhaust is so slow!

This is the back half of the expansion chamber.
(notice all the fiberglass. This is where the silencing comes from!)


pipe just after the expansion camber

The outer pipe is just for looks. (its the one in the middle.)
The actual pipe is only 1/2 id. :wow

this is the front half of the silencer?
(not really a silencer?)


this is the rear half of the silencer.


Hope you all enjoy this info.

[randomguy310]

i just cut up and modified a stock ysr 80 pipe and it was pretty open in there, no blockage or fiber glass.very different then 50 it looks