Hi,
I am embarking on a rebuild of my son's Montesa Cato 247: Engine & Frame number 21M22865,making it manufactured between October 1976 & March 1977.
I have a question about the swing arm. The bike is fitted with a standard swing arm but I'd prefer to fit a longer one for trials use. My question is where could I source one or alternaticvely how much longer is a trial SA so I could consider lengthening the standard one.
Thanks