Universal muffler (4" inlet)

[Nyteryder]

I am looking for a universal muffler with a 4" inlet. If someone has one or knows where I can find one LMK.

[SampaGuy]

http://store.summitracing.com/partdetail.asp?autofilter=1&part=WLK%2D24217&N=700+4294922711+4294922710+4294891681+4294788252+ 115&autoview=sku