October 29, 200916 yr Would installation of a 1971 swing arm be AHRMA legal on a pre 65 lightweight? I'm planning to install a Bultaco wheel on a C15 but also have the swingarm. It might actually make the swap easier. The rule book mentions frames and engines but says nothing specific about swingarms. I do notice that people modify swingarms and others offer aftermarket arms.
November 2, 200916 yr Yes, any item up to model year 1974 may be used.Tony On a pre-65? What part(s) of the bike have to remain pre-65 then?
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