The FMF Q4 exhaust is the most popular exhaust system for the Yamaha WR250R and WR250X. Run the Q4 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.
With riding areas threatened more every day, FMF takes seriously the expression ‘less sound equals more ground’ and with the Q4, FMF has designed a slip-on exhaust that leads in high performance quiet technology. Using the best materials, the Q4 uses intricate chambers and baffles to improve flow while still dampening sound. Roost more, ride more and offend less with the FMF Q4!
Fitment: 2008-2020 Yamaha WR250R / WR250X
Constructed from aircraft grade aluminum and high strength stainless steel
Use with stock or FMF header
Removable USFS spark arrestor included
Pounds lighter than stock
Twin stage core design for lower sound output and extended life of packing material
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