marvin You can get the part number from ducatiomaha.com. There are two different ones. If you want the Testastretta pulleys look up the # for the S4RS. If you want the desmoquattro look up "04 S4R.
surfking Thanks Marvin I looked at ducati omaha and came up with 225.1.014.1A which i geusse is like below, but Im really after the exact type in the picture which look close to the STM type but I got them in a Ducati bag and i beleve there are say 2 degree adjustments. http://www.ebay.com/itm/Official-Ducati-Performance-Ergal-Roller-Pulley-Set-ST4-S-S4-R-748-916-996-/272789775123 Nick
marvin surfking wroteFor a testastretta or a desmoquattro? The ones DucatiOmaha will have are the fully adjustable OEM pulleys for either engine (desmoquattro and testastretta pulleys are not interchangeable).