Modern Vespa

I'm starting to get some exhaust noise on my GT200 and I suspect that the graphited Sleeve/Bushing/Gasket between the header pipe and the muffler has statred to go.
I can't seem to remember the alternative part to use for replacing that excessively expensive Vespa part.
Help, please.

How much is " this excessively expensive part" ?

Curious.

Yamaha 3YF-14714-00

$5 yamaha $20 piaggio.

Shooter --- The last one I bought from a Vespa dealer was $27.00.

tomjasz --- Thank you for your prompt answer.

My GT 200 did that. About two weeks ago I was riding along and noticed it was louder.

All that happened was that the fitting at the head, where the muffler (and sleeve) connects slid apart. I loosened the bolt, slid it all back together and good as new.

Lothar,
I thought of that too, but it's been raining around here and I haven't been motivated to lay down and have a look at it yet. Some time back, when I last replaced that "sleve", I made a "Barrier Ring" that I clamped to the header pipe, using a hose clamp, to keep the sleve from being blown out from between the two pipes. Maybe that has screwed up.
It has been suggested that I install a solid bushing instead of the graphited sleve, but I feel that that would stress the exhaust pipe attaching studs in the cylinder head possibly causing a rather difficult repair if one of the studs were to break.
I feel that the sleve provides an expansion joint that is necessary in view of the way the muffler is mounted so solidly and thermal expansion must be considerable between the parts.

After having an LV pipe without the soft packing on my GTS, Ive come to agree about the expansion capabilities of the graphite joint. Its really the only shock and expansion absorbing portion of the entire exhaust system and probably the best engineering compromise available.

Got an expensive one last year just in case. Did not need it, even after removing the exhaust numerous times for servicing. Price has plummeted ! Could get two today, with change.

After reading, talking, and wrenching on my exhaust I'm convinced Matt is correct and the graphite is the smarter choice. Regardless of the bronze bushing reported success.