Mine came In a kit from eBay. I since upgraded to an expansion chamber.
The manifold on the stock one needed to be matched and the exuast tip had welding the restricted the flow.
are you saying you would be willing to sell it?
i could fix the issues you describe... this style muffler would look so good on a build i'm working on & that ebay seller no longer has them (even in their kits)
ninja - let me know if you are willing to part with the one you have
Yea just pm me
Or send me a email and we discuss the details
... Do u want all the innards to? Like the bafel and whatever else is inside, I took em out for better sound and flow
I also kind of widened the manifold, but only by little before I ran out of deramel bits