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mikey454

what fuel for wr450 with 480 athena

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Hi i just bought a wr450 with a athena big bore kit installed. What octane gas should i be running in it? I have available near me 91 octane gas without ethanol and 94 with ethanol and av gas. I can get race gas but at around 8 dollars a litre its not really something i want to use. Will 91 be ok in it? Can i mix in some avgas or will avgas be as bad as ethanol?

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My understanding is you have no more compression than stock. So premium pump gas as any car or bike should be fine. You don't need any funny fuel.

Edited by stevethe
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