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I remember that Cycle Guide article well from back in the day. It was a 2 or 3 part project that extended over 2 or 3 issues. I still have one of the original magazines somewhere. I followed the project closely and drooled over the results!!
I also remember the the frame lowering modification. It was one of two supposedly trick modifications for better handling that were popular at the time. It was primarily intended to lower the center of gravity of the bike to improve handling. The other side benefit was to lower the swingarm pivot so that the swingarm was closer to being parallel with the ground as it was thought that this would improve the suspension action. I'm not convinced on that one.
The other popular mod was a Z shaped extension welded into the swingarm between the lower shock mount and the axle. This extended the wheelbase an inch or 2 and was supposed to reduce the dreaded "YamaHop". I'm not sure either mod was particularly effective but both were talked up in the pages of Dirt Bike Magazine so we all thought they were trick!
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