FMF Factory-4.1 RCT Stainless Steel Silencer
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    FMF Factory-4.1 RCT Stainless Steel Silencer

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      The FMF Factory-4.1 RCT Stainless Steel Silencer features a bigger volume can which can utilize more packing material for better performance and longer lasting low output sound volume. The RCT in the front end of the exhaust is another huge added gain for sound and performance. The FMF Factory-4.1 RCT Stainless Steel Silencer is sound compliant with the FIM 2M Max sound test. The design of the FMF RCT exhaust was to offer a look that really fits the complex lines that many of the manufactures are leaning towards.
    • Incorporating the latest in Resonance Chamber Technology.
    • Patented core shape lowers sound level while maintaining maximum power output.
    • Patented canister shape increases internal volume for more sound absorbing material.
    • Patented chamber design to enhance and refine exhaust pressure.
    • Factory Forward Engineering centralizes mass and is less prone to crash damage.
    • Tuned exhaust with optimized core specifications for each application.
    • Innovative rear end cap for simple installation of tuning tip inserts or spark arrestor.
    • Meets AMA and FIM sound requirements.
    • Quiet Core 94db insert included.
    • Spark arrestor included in muffler.
    • Built 100% in the U.S.A. at FMF’s state-of-the-art-factory.
    • Maintenance made easy with the removal of 4 screws on the front end cap.
    • Compatible with stock head pipe or FMF head pipe.

    FMF Factory-4.1 RCT Stainless Steel Silencer Reviews

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    0 of 0 people found this review helpful.

    Ditch Your Stock Pipe

    Comments On Nov 17, 2014:I needed to get a spark arrestor and had narrowed down my choice to either the 4.1 or the q4. I was concerned about how loud the 4.1 would be for trail riding and although it is deeper with the quiet insert installed it is not raspy or headache causing. Put your "Rich" EFI plug in and get out and ride.

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    1 of 1 people found this review helpful.

    instant performance upgrade

    Comments On Jul 21, 2014:Besides the coolest exhaust note yet: this along with the FMF Grunt added imediate & noticable improvement in the throttle response & low end for my bike over the stock silencer. I hope I don't have to but I'd purchace it again.

    Additional Comments On Jul 21, 2014:I typed FMF grunt when meaning FMF Snap.

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    0 of 0 people found this review helpful.

    good product

    Comments On Mar 24, 2014:give more hp and very good sound good product

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    1 of 1 people found this review helpful.

    Major torque increase in 450SXF

    Comments On Dec 04, 2013:This pipe absolutely cures the common complaint about the new 450SXF's lacking on bottom end torque. 3rd gear wheelies out of hairpin corners are common now even without a clutch kick. Once you take your stock muffler off, try looking through it and you'll see why the bike is so choked up.

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