I have a 1984 200X and I was thinking of installing a bigger motor for more power. Is there a bigger motor I could use that would bolt up to the frame or would I need to do some fab work?

 

with my 200x, I bored it out and upped the compression slightly, jetted it, full exhaust, and it ran great, huge improvement .... Also extended the axle, switched out the sprockets I think I went down one in the front and up 3 or somethign like that I dont rem. But with the extra power from the big bore kit first gear was useless and I wanted more speed. .... Should be cheaper to bore it out than buy another motor and bother with making it fit.