Suspension for Super Cub

[beran@seznam.cz]

Does anybody know what suspension it is?
We have in on one Super Cub and would like to buy it for the second one.

 

[Steve Pierce]

I have never seen another suspension like it.

 

[tempdoug]

does it have caps that screw of on either end? and it looks like grease zercs on the top on both ends, what are those?