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exhaust blow up

  1. 2008 KFX450R Exhaust BLOW UP!

    General Discussion
    SO im hoping someone can help/explain how and why my motoworks s4 slip on would BLOW UP at full throttle. it litterally blew apart, a big ass hole in the top of the mother fucker. does anyone have a clue? and any tips on how i could prevent this from happening again??? i am going to trail...
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