I've got a 46 tooth on the rear that's all (with a 110 link chain). Try it, you'll probably like it (and yes, in first, my SV will wheelie at 3k revs if you snap open the throttle - but I do have the ignition advanced 4 degrees which supposedly makes the torque lower down).
Don't expect 30 extra BHP, just snappier acceleration - particularly in first and second.
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