CRF450X FMF Q4 Muffler / MegaBomb Header Full Exhaust System
CRF450X FMF Q4 Muffler / MegaBomb Header Full Exhaust System
CRF450X FMF Q4 Muffler / MegaBomb Header Full Exhaust System
Home > Dual Sport Parts > Honda CRF450L > FMF Q4 / MegaBomb Full Exhaust

We've combined several of the most popular FMF products for the new 2019+ Honda CRF450X into one simple exhaust package. The package consists of the FMF Q4 Hex Slip-On muffler and the FMF MegaBomb header pipe. This Q4 system is the quietest full exhaust available for the bike. If you are looking for something a little less restrictive, but also louder, check out the FMF FMF PowerCore 4 / FMF MegaBomb system.

Fitment: 2019+ Honda CRF450X

PACKAGE INCLUDES THE FOLLOWING...

One (1) CRF450X FMF Q4 Hex Slip-On Muffler:
  • Constructed from aircraft grade aluminum and high strength stainless steel
  • Removable USFS spark arrestor included
  • Pounds lighter than stock (total weight 5.8 lbs)
  • Quietest aftermarket muffler available for your CRF!
  • Includes mid pipe insert if you want to use with the smaller stock header pipe (fits 450X header only)
  • Meets USFS and FIM World Enduro sound regulations
  • Part #041578

    One (1) CRF450X FMF MegaBomb Header Pipe:
  • Stainless Steel Construction
  • Ideal for use with FMF PowerCore 4 and Q4 Mufflers
  • Part #041577

    Helpful Links:
  • CRF450L / CRF450RL Performance Modification Guide


  • NOTE: This FMF exhaust system is a performance product and designed for closed course competition use only. By purchasing this product you understand that the parts, installation and performance modifications are not emissions or noise compliant and are for closed course competition use only.


    Honda CRF450L FMF Q4 / MegaBomb Video:




    ** OUT OF STOCK - We no longer carry this FMF muffler/header combo. However, We may have one of the following in stock...

  • Yoshimura RS-4 Full Exhaust

  • Graves Titanium Full Exhaust




  • CRF450X FMF Q4 Muffler / MegaBomb Header Full Exhaust System
    FMF-041578-041577Retail Price: $799.99Our Price: $789.95
    Model: 





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