Porsche/Fuch cap tension rings, for the 74+ ring style 70mm caps.
Loose caps are common and these rings have set screws that line up in the factory dimples allowing you to add tension.
I made these to fit OEM Porsche/Fuch caps I have not worked with aftermarket caps so I donít know if they would fit but most likely would if they are a good repop of the OEM.
Ring inner diameter is 1.815Ē- 46mm so take that into account if you have a grease cap etc close to the cap area.
These will not fit the earlier 67-73 66mm caps with three clips, also will not fit 2liter caps those are a totally different animal.