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Discussion Starter #1
hey so i have a 01 yamaha raptor 660r with a slip on HMF exhaust & i have the jet kit for it i just want to know what jet to use in the carbs and what is the adjustment i need to do so it can run good and everything else is all stock
 

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Master of the Electron
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With just a slip-on stay stock on jetting.
 
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