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FMF Q4 Exhaust Muffler Slip-on Quiet Series KTM 250 350 450 SX-F 16-18

FMF Q4 Exhaust Muffler Slip-on Quiet Series KTM 250 350 450 SX-F 16-18

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  • MSRP: $379.99
  • You Save: $38.00 (10%)
  • Brand: FMF
  • Condition: New
  • SKU: 79-4193-WPS
  • Manufacturer Part Number: 045590
  • Surface Finish: Brushed
  • Warranty: Yes
  • Part Type: Exhaust
  • Placement on Vehicle: Rear
  • Type: Slip-on
  • Country of Manufacture: United States
  • Compatible Make: Ktm
  • Compatible Model: 250,350,450
  • Years: 2016-2018

Brand New Model, Improved performance with quieter sound.

FMF Q4 Exhaust Muffler 


  • Type: Slip-On
  • Configuration: Single
  • Const: Aluminum
  • Finish: Natural
  • Midpipe: Stainless Steel
  • Endcap: Stainless Steel
  • Spark Arrestor: Screen Insert (included)
  • Head Pipe: not included, fits stock head pipe
  • Please Note: we use a generic photo for our listing..this item is similar to the photo and has the same appearance may vary depending on your specific year and model.

FMF is the leader in high performance quiet technology and our Q4 is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler available. With the Q4 you don’t need to hear the power, just feel the power!

  • The Q series features advanced engineering to precisely locate baffles and chambers to absorb sound
  • Less mass to enhance power-to-weight ratio
  • Quiet power with minimal sacrifice for performance
  • Q4 slip-on muffler unless noted

Fmf Q4 Muffler

  • Comes standard with spark arrestor
  • Twin-stage core design for lower sound output and extended life of packing material
  • Developed over years of championship off-road racing

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