Can cam support gear change?

Unless his rear is moved back, the '70 wheel opening gets real tight with taller tires. I moved mine back 1/2" just for that reason. If I remember right, 28" is the tallest I could fit after the move and I'd probably have to do some trimming to keep the tire from making contact under compression/launch.
255's fit nicely in 70 wheel openings. I do like the way they look moved back though.

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