You can not buy these on there own as they come as part of the shock/ kit.
There is no part numbers on them and they are not made by Renault
Thanks for the info Marc. I have just bought a set of the Twingo dampers (you most probably saw them for sale on CS), based on what you've said then, I won't be able to purchase the dust covers at all?
I thought people were having their original Sachs modified to allow them to fit the dust covers from the Twingo R1 dampers?