Exhaust Productions, Inc. ( http://www.epiflex.com/ ) makes a variety of
these things but you can buy some of their products for much less money
from J. C. Whitney.

These flexible couplings are actually steel bellows assemblies with a
braided steel protective covering.  Some of EPI's products, but not the
ones available from J.C.Whitney, also have steel braid on the inside.

These work well for adsorbing bending motions but they will not
accommodate twisting.  The section in the tiico exhaust header, as
supplied, is set up for twisting motion...

More information to the list in a few days...

Michael Blackburn wrote:

I was wondering if any of the tiico owners can help me out.  I was at a
VW
 show this weekend and noticed a tiico owner had a braided flexible
joint
 between the muffler and the rest of the exhaust pipes.

 Does anyone know where to get such a part.  I have a spring mounted
ball
 joint that is supposed to reduce vibration, but it isn't working well.
I
 thought the braided flexible joint sounded much better.  The tiico
owner I
 talked to said he has no vibration problems.  I'm tired of my teeth
 rattling.