The stock jet sizes for a Suzuki RMX 250 typically include a 150 main jet and a 45 pilot jet, but this can vary slightly depending on the specific model year and local conditions. It's essential to check the owner's manual or consult with a mechanic for the exact specifications for your bike, as factors like altitude and modifications can influence the optimal jetting. Always ensure your carburetor is properly tuned for the best performance.
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