expansion chamber or dirt/pit bike exhaust muffler??

[richirich1113]

I have an SBP expansion chamber exhaust but looking at dirt bike and pit bike performance exhausts the look alot better but how would they perform? has anybody tried one or know how they would perform?

 

[motorpsycho]

it depends on how those pipes are built. what rpm are they tuned for?
what c.c.'s are they made for?
all of this will determine if they will work on one of these engines or not.
your best bet is the sbp chamber because they are made specifically to work on these chinese 2 strokes, and you can tune the pipe to your liking by changing the length of the headpipe to make the pipe "come on" at whatever rpm works best for you.

 

[HeadSmess]

two stroke with a straight pipe intended for a four stroke pitbike?

 

[richirich1113]

I was looking at motorcycle part sites and saw that they had exhausts for small cc dirt bikes and pit bikes that are 2 stroke. They did not say though what rpm that they wre tuned for. so im just fishing for info if anyone has tried one or what the results could be.
Thanks

 

[HeadSmess]

theyre usually horrible china bling with rusty chrome

unless they follow basic principles, they wont work, and can be worse than nothing at all... most china ^%& is just that...

stick with the sbp or whatever they are unless you can make one or two or lots . the beeeeest option