From what I can tell from Campa's 012 spare parts lists (A-B) the mid-range wheels using the same old (so to speak) 17mm alloy rear axle are now outfitted with the new FH-BUU015 freewheel.
As are Fulcrum wheels from Racing 3 on upwards. (Haven't checked R light nor R Speed yet)
The high-end range (HYP-BOR) hasn't changed and continues to use freewheel spare part # FH-BO015.
Spare parts for both types are identical and both freewheels should be interchangeable from what I can tell by looking at the sheets.
On some pics I came across the net FH-BUU015 sports a greaseport but these pics could be ones of the predecessor of FH-BO015, the one with the entirely round axle iso the newer lobed one.
My wild guess is there might be a difference in bearing quality (hence the grease port perhaps) or they added the grease port back on due to complaints of the lack of serviceablility of the inner bearing? That's all I can come up with so far.....
If that's the only difference then I'm baffled as I don't see how they can spare a penny that way but then I'm no master in economics either....
Now if only they could come up with a CULT bearing version of FH-BO015 and make it easily serviceable again I'd be very happy indeed.... Been begging, sitting on my bare knees for years now.
@Ultimobici: any info is welcome, tia.