Stock Muffler for XR400R

What pipe do you currently have?

I unfortunately don’t have one at all...but am needing a quiet one for a plated bike.

used mufflers on ebay

have you tried xr's only ?

Yeah, XRs has new ones however they aren’t going to be quiet.  Been watching ebay too but they don’t come across there too often.  There’s one on there now but the baffle insert is gone and it doesn’t appear you can buy them anymore.  I may need to try the 250X retrofit I seen talked about.

Muffler inlet pipe sizes for XRs vary among models; XR200 1 1/4" OD, XR250 1 1/2" OD, XR400 1 3/4" OD. So maybe a CRF450 muffler.