As the pioneer of quiet performance mufflers, FMF raised the bar again in 2007 with the second generation of Q series mufflers,the Q4.

Built from the ground up, the Q4 is a completely new design, engineered for maximum performance while maintaining a sound level at or near 93dB on most models. The Q4 is the market leader for low sound/high performance. Less sound equals more ground.

Q4 Details

  • The Q4 incorporates Factory Forward Engineering to move the muffler closer - centralizing the mass for improved handling characteristics.
  • The new Hi-Flo formed end cap reduces weight and is less prone to damage.
  • The Q4 has an anodized aluminum canister and is lighter and quieter than the original Q model slip-on.
  • All Q4 Exhausts utilize a maintenance free USFS approved turbine type spark arrestor so there is no screen to clean or burn out.
  • The Q4 employs free flowing internal baffles and chambers, advanced sound-absorbing materials and a reduced weight.
  • Max Sound output 96dB, most models below 93dB.
  • Constructed from aircraft grade aluminum and high strength stainless steel.
  • Use with stock or FMF header.

    • FMF Q4 SPARK ARRESTOR SLIP-ON EXHAUST - SINGLE PIPE

    Our Price: $324.99
    Retail:$359.99
    You Save:$35.00 (10%)
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    Overall:
    5 out of 5
    5 out of 5
    Ease of Installation:
    5 out of 5
    Ease of Installation out of 5
    Style:
    4 out of 5
    Style out of 5
    Durability:
    5 out of 5
    Durability out of 5
    Performance:
    5 out of 5
    Performance out of 5
    Power:
    5 out of 5
    Power out of 5
    Location: Freeport, IL
    The best Exhaust!
    " Great exhaust! Put it on my 09' crf150, great performance. Also nice sound. If you aren't happy with it take out the spark arrester pipe with a alen wrench. SOUNDS AMAZING! Nice low bello. Brappp! "

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