Ims1977, What swing arm lenght would be good and still trail rideable? My motor has a cracked piston. I should possibly port and bore while it's apart. But, I really feel a broad power band would work for me. If my crank is out of spec. I'll probably buy a 4mm.
I got plus 2 plus one a arms that use honda 450r lenght shocks. My frame is converted to a arms and gusseted.