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Thumper-Racing suggested...

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Posted by: FifeDog---------------------

I have a 2003 XR250R, and just ordered Thumper-Racing's Stealth Insert as well as a K&N air filter. They also recommemded a #42 pilot jet to replace the stock #45. I have removed the snorkle, and stock baffle also. Has anyone had success with this intake/exhaust mod?



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