Here is the Zundapp Super Sabre 250S Spare Parts List from 1957. Please be patient, the file is 121 MB. Best saved to disk and opened with acrobat reader:
zundapp-250s-super-sabre-spare-parts-list-1957
There is also a very handy list which compares the 250S Super Sabre and the 201S Challenger so you can see which parts are interchangeable (many!)