Are there any differences between a stock 1973 Penton 125 MX swingarm and a stock 1974 Penton 125 MX swingarm?
Yes, 1973 has the kickstand that goes through a tube welded under the swingarm kind of like an old bicycle kickstand. The 74 kick stand attached to a bracket that was on the swingarm side.
Larry
I have had a couple of frames that were serial numbered as 73's that have the kickstand attached to the swingarm. Many differences!!
Rocket