MOPED ARMY

Adding cc's is the easiest and most bulletproof way to add omph. Do you want cheap speed? Shoot for a kstar/airsal 70cc kit with a mild carb and pipe. Get a bundle deal for less than $250. Good for 10-15mph. Joe

From your profile, it looks like you've already got a Bitrubo on it. If you hadn't upgraded the exhaust already, that's what I'd tell you to start with. Do you have a high flow air filter with it? Did you upjet the carb to match the pipe? Have you done any plug chops to see how your bike is running? How are your tires? (okay, that's more of a safety thing than a speed thing, but you should replace them if they're old or looking sketchy). Have you repacked the wheel bearings? And last but not least, how much money do you have to throw at upgrades? A kit can help you go faster, but a bigger carb and other upgrades like that (which cost more money on top of the kit price) will help you get the most out of the kit.

Anyway, if you haven't gotten a high flow air filter, you might as well get one. It'll be part of helping you get the most out of your kit if you do decide to kit it later. Check your jet size and run a plug chop to make sure your bike is running properly. Have a "fun with wheels" day and replace tubes/tires, repack your wheel bearings, clean up your brakes and brake pads, and get a smaller freewheel (optional -- makes pedaling more effective). If you don't mind losing a bit of acceleration, putting on a larger front sprocket will increase your top speed a bit. Then depending on how much money you want to spend and how fast you want to go, you could get a bigger carb, or a kit, or both.

We've got tutorials and write-ups about most of the stuff I just mentioned. If you want links, let me know, or just check the wiki.

Disclaimer: all of this is just my opinion. If you read this discussion you'll see that there are a lot of theories on what order you should add performance parts. You should read through that and get some more opinions.