While it was here that the basket does not fit on Z2. We have a 2 year old Puky SL-X (ie exactly the predecessors of the specified series), the basket but not as fits well off (ringing in the way). For older wheels you seem to get any baskets. Pity! The product makes a good impression otherwise.
Addendum: Have now a porter basket for Puky taken impellers, which fits to the 16 '' bike.