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new piston

  1. Kawasaki Dirtbikes
    I just rebuit my 125 and it runs perfect again but idk what to do to break it in. Should i let it idle a while in the garage while holding the rpms kinda up or would riding it a little easy for like a half an hour wor. Also im mixing 42:1 right now so should i mix richer will it a new piston...
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