These are the more expensive Aero type.
I used these on my S4R on the track, complete set inc engine bar, bungs, bolts, mounting brakects etc still boxed. They retail from R&G at £66 ex VAT so near to £80 for a brand new set.
http://www.rg-racing.com/browseBike/...S4RS/2007.aspx You can have the for £55 inc postage.
They will fit most Desmo type Ducati's. I had them on my 600SS race bike and the engine bar is the same width as my 800SS race bike so I would guess they will fit all the Monsters, SS and prob the 916 type bike.
If you are interested drop me a PM or a text on 0772 309 8633
Paul