I have recently got Shinerays new MX bike, i find its a bit sort on power and are looking for some power upgrades, Does anyone one know of an aftermarket exhaust that will fit the machine and provide more power, also any ideas on mods for the Airbox. It has a Mikuni PZ30 Carb where can i get a jetting kit for it or what type of jets should i buy that would fit this carb.

Any advice would be great.