That feeling when she opens up and hits power band.... Anyone that has rebuilt a motor knows it . After rebuilding the top end,toomey b1, Boysen power reeds, vented air box lid, 310 main jet and needle jet adjustment, tires chain, front and rear bearings, brakes wheel spacers, graphic kit, z400 rear shock, oil injection block off and probably a few other things.today was the 1st trail ride and she didn't disappoint. A little break up mid range but top end was there. What a difference from before