Ill just stick to the enhancer Cdi and a lightened flywheel
As mattE said the lightened flywheel really doesn't do much unless you already have the enhancer, high comp. Head, ported bpipe, ported motor a pump with the right pitch prop, etc. It is the last piece of the puzzle.
I think of it as putting neon lighting under a work vehicle.
I went back to back on a stock motor with bpipe, enhancer, head in the surf and the flat for a week and noticed ZERO difference in performance. IMHO I don't know why people think they need a light flywheel. You are spending money to weaken a part of your crucial electrics.
That money could be spent on better parts or more tanks of gas!