yeah new exhaust, toomey,lrd, shearer, dynoport, those are the top names, if you are on a budget then fmf is a good pipe for a stock motor,there is also the vf3's which allow for better throttle response, crisper throttle, you can also talk to the builders on here for a p/p for ur riding style, all 3 are very good and know their sh*t. bigger carb 30mm-35mm depending on ur applications, you can go as far as a 240 kit for it, big money but well worth it. the list goes on there are so many things you can do to them, a arms, axles, front shox, rear shock, plastics, graphics, oil inj block off, tors removal, etc.