oil is very important in rave engines now days, you get what you pay for and Bel-ray is the best out there
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Bel-ray EXS full Synthetic is the only oil I run in my WR450F. I can run it longer than other oils I have used in the past. Bottom line it's top of the line lubrication for your favorite TOY.
There have been no questions asked about the Bel-ray EXS Full Synthetic 4-Stroke Engine Oil.