Anyone know of a coolant expansion tank for sale? My jb weld fix only lasted a year.

You could try this: http://www.ducatiperformance.com/advanc ... =&x=41&y=1 or http://www.store.commoto.com/product_in ... s_id=75404
No idea if they really have it available.
Good luck!
Luis

It's no more available for long, long time.
Such thing has been already discussed many times.
You could fix yours or fit another one from a different bike.
Good luck