Tubliss?
 

Anybody using this system?

http://www.tubliss.co.uk/

Looks interesting for reducing the weight of the front tyre, especially on the XTz. Unfortunately, they don't seem to make a 17" for the rear yet.

Essentially, the system takes the existing rim and makes it 'tubeless'.

Any thoughts?

There's big hype about it on various dirtbike forums. Apparently works best with sealants.

Oh thats funny as my mate is a dealer for these and there is a write up in this months tbm about them ,he is in the process of testing them out as he does with almost all the items he sells and if they turn out not to be as good as they are made out he simply wont stock or sell them but they do sound very good and have been tested for a number of years although with mx bikes

www.riderz.co.uk