The FMF PowerCore 4 Hex slip-on is one of the most affordable mufflers available for the Yamaha WR250R and WR250X. Run the PowerCore 4 Slip-On muffler with your stock header, or pair it with the FMF Powerbomb or MegaBomb header, to really wake up the engine on your bike, as well as give it a much better sound.
SOUND: Please note that the PowerCore 4 muffler is slightly louder than FMF's Q4 muffler. If you are looking for something quieter, check out the FMF Q4 Slip-On Muffler.
Fitment: 2008-2020 Yamaha WR250R / WR250X
Constructed from aircraft grade aluminum and high strength stainless steel
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