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For a winning 2003 Yamaha race kart, make sure you are using genuine OEM parts at every tune-up and when replacing worn parts. By fitting the best parts you'll be getting the best from your 2003 Yamaha race kart. We stock brand new OEM parts for Yamaha's legendary race kart engines and offer these parts to you at deeply discounted prices. Use our online parts diagrams to locate the components you need and we'll ship them direct to you. All OEM parts orders are backed by our price match guarantee!