Stabilus shock # 01 20 130 211 dated 06/71. Stabilus cannot supply and does not have a replacement. Closed is 10.5" Open 15 7/8".

Have you considered getting your original one refurbished / rebuilt. There are people around who will do this. These people http://www.shock-factory.co.uk/ apparently make shock absorbers and may possibly be able to help. The basic parts may be ok, but just needing new seals, bushes and oil. They are not very complicated.

Jandi are good folk to ask - always super helpful

http://www.eribacaravans.co.uk/parts.php

Taunton Trailers have a nice selection of dampers and may have some good advice, they were very helpful when I talked to them about brake parts for our '76 Familia.

https://www.tauntontrailers.co.uk/al-ko-dampers-17-c.asp

Cheers,
Steve.

The unfortunate part is I'm in the States and I've reached out to all the companies in the UK with no luck so far. I'm trying to contact some custom shock companies and trying to find a place to have it rebuilt. I didn't think it would be this difficult to replace the shock. Has anyone figured out how to eliminate the shock all together? It is light enough I really don't need the brakes.