Higgy - here's another option if you're looking for carbon..
Dave Moore used to make the "legalizer" which was billet and carbon fiber. I got stopped on the dunes in Florence once and
passed that sound check but my buddy received a ticket with the standard ESR silencer. He's not around anymore but you could give
Modquad or
DTR Racing as they picked up some of that stock and/or may know where to get one. If you wanted red carbon weave, you'd just need to find the right diameter tube (since his is just a cylindrical tube). Here's a pic on the bike:
