Still trying to source the OEM parts for my Euro M635. Parts needed: 18122225082 Front muffler(resonator) 18121309004 Rear muffler Can't find a US vendor that can get them into the US. Schmiedmann says they can ship but will be expensive.
Try these guys I know they sell supersprint and give CCA discounts. http://www.bmpdesign.com/category-exec/category_id/100