Attracted by the prestretch and strength. And the stuff was available. This chain was used by a lot of racers over here in period.Yeah I have seen the hondamatic swap as well as the Cycle X chains.
I actually have a set of HD chains from cycle city classics. I assume they are the same as the cycle X ones.
Was the porche chain done because that was what was around, or a cost thing, or just because they are stronger?