man get the
www.minibikesuspension.com stiff springs, a used shock like ishock or works for a cheap price like 150 bux for a good condition one, and some bars like pro taper or some renthals. U can get Renthals for 40 bux on ebay thats where i got mine

. Then work on the other stuff And the pipe mod is were u take the head pipe and drill out that lil tiny hole. After that I would get a Full exhaust system and a pod filter. Great pipes IMO are the Pro Circuit, Two Bros M-6. Those are the ones i came down to. And then u will have to rejet. Try a 85 main and 40pilot. thats what Im running. and u will have to get a size 6 washer and raise the needle and install those jets and you should have a nice running bike with a good amount of power over stock i love mine. Good luck hope this helped.