but marc, at least you are considering the proper approach. As nice as Campy cranks are, they are pretty incompatible with Specialized Sworks bikes which have pretty unique PF30 spacing. Specialized does this to preclude other crank sales. The bike should shift well with Specialized cranks and rings however and you should be able to find the chainring sizes by either going 110 or 135...latter being their proprietary BCD.
You maybe able to adjust the spacing between the Specialized rings to 11s chain width spec. You will have to do some research on that. Not a bad idea to email Specialized tech department. They will respond and believe if you ask them about installing Campy cranks on a Sworks they will tell you they are incompatible which they pretty much are. Campy cranks are pretty unique in that spacing can't be changed because bearings are pressed onto respective spindle halves...unlike virtually every other crank out there.
Last edited by Campag4life; 02-13-12 at 03:56 PM.