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kfx450r exhaust

  1. Pro Circuit exhaust header question

    I got a 2011 kfx and I came across a pro circuit t4 that is for a 08 it fits and all but were the header goes into the engine I looks like it should go in more. when I run it I don't hear no leaks but just want to know if its ok
  2. 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...