Yeah, ring 'em, Yeti. When I spoke to them a couple of months back, spare pegs, hangers, etc was no problem. I think I paid about 25 quid for a hanger.
I am going to give them a call myself, because Ducati in their infinite wisdom no longer make the DP items so aftermarket is the only option unless you find a dealer with some still kicking about in stock.
This is also the case for a number of other DP items for the 748/9*6/8 series of bikes including the longer handlebars which I have always used as they make the bike easier to turn without resorting to ludicrous geometry settings.
Garry, Moto2 also do handle bars that fit the standard clip-on clamps. I think they are about £17 each but don't know the length. Also, I can still get hold of the proper Ducati pegs and bars if you need any.
I get the DP pegs remade as they are no longer available and can supply the longer handlebars as well but your clamps have to be reamed out, somthing I also do. Rich