Boyesen Dirt Bike Cooling Systems

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  Boyesen Supercooler Water Pump Cover and Impeller Kit

  Paul in CA

  06' RM 250

  Started using this bike for Desert Racing. Last race went up a looooong WOT sandwash, and I could feel the heat from the rads. Bike was working hard. Put the new impeller & housing on and raced again, and this time there was a 3 mile wash, with a good slope to it. Bike didn't get hot at all, and ran cool all day! Runnin' Cool = Horsepower!! I'm SOLD! Just bought another one for the 450. :-)

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