2013 WR450F Stock "PowerBomb" Header & Exhaust Choice

3 replies to this topic
  • Brackish

Posted March 02, 2016 - 10:53 AM


I just bought a 2013 WR450F that is completely stock.  What's the deal with the stock PowerBomb header?  I thought I read somewhere that it's not the same as the aftermarket one.  Is that true?  Should I get a full exhaust or just buy a slip on?  Which exhaust should I buy if I plan to ride my bike on the street?



  • dirznut

Posted March 03, 2016 - 09:44 AM


I bought a slip-on for my '12. It comes with a spacer to use with stock header or you take it out to use with power or megabomb. I guess the fmf headers have slightly wider diameter.. but I don't think it's worth the price for a small gain. The slip-on itself didn't seem to do much either.. but that was coming from an uncorked stocker. 

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  • Brackish

Posted March 03, 2016 - 12:19 PM


Do you have the GYTR ECU and tuner?

  • dirznut

Posted March 03, 2016 - 03:22 PM


Yes, ECU, tuner, FMF tune, GYTR throttle screw (came with competition ECU), uncorked airbox. 


I didn't see a big difference but I also didn't get much seat time all together stock or fmf exhaust. Mainly louder.. maybe I need to try different maps.


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