thanks for that it is trim end pipe:thumb::thumb:Is it a full tail pipe you require or just a trim end pipe to fit over the existing tail pipe? If it is the latter, try a search for "exhaust trim" on eBay. You will find several with universal style fittings which will fit a Boxer tail pipe.
Try J.P.S in Macclesfield (Cheshire). They make everything from tailpipes to bespoke systems and will only work in stainless steel.thanks for that it is trim end pipe:thumb::thumb: