FMF Racing® 045590 - Quiet Performance Q4™ Hex Slip-On Muffler

4 reviews|Item # mpn4565175096
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    Notes:
    • Remember to check your local or state laws regarding vehicle noise restrictions
    • This is a Race Only product that is to be used solely for competition. It cannot be used on vehicles that are operated on public streets, roads or highways. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state and federal laws. Shipping Restriction: CA, NY, ME
    Authorized Dealer
    $404.99
    In Stock (1)
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    Vehicle Fitment

    Husqvarna
    KTM

    Specifications

    Exhaust Type
    Slip-On Muffler

    Features

    • Incorporates internal baffles, chambers and space age sound-absorbing materials to accelerate exhaust flow with less noise and minimal power loss
    • Well under the 96db sound output on most machines to satisfy strict sound requirements
    • U.S. Forestry approved Spark arrestor with maintenance free, stainless steel spark arrestor screen
    • Designed for your exhaust system needs
    • Will deliver unparalleled performance
    • Exquisite workmanship and great longevity

    Product Details

    Quiet Performance Q4™ Hex Slip-On Muffler (045590) by FMF Racing®. The FMF Q has always been in a league of it's own and the latest Q4 HEX is the most significant upgrade to date. You don't need to settle for a plugged up moto muffler hampered by an insert when you can have a compliant muffler engineered for performance. Massive power gains throughout the RPM range. FMF™ uses the highest quality proprietary blend of alloy titanium made especially to the standards. Complete system includes Titanium Megabomb Header. Quieter than stock. Huge weight savings. RTS (Rapid Tuning System) makes for easy sound insert changes as well as adding US Forestry-approved Spark Arrestor. Developed over years of championship offroad racing. Twin stage core design for lower sound output and extended life of packing material.

    Installation

    FMF Racing® - Quiet Performance Q4™ Hex Slip-On Muffler Installation guide
    FMF Racing® - Quiet Performance Q4™ Hex Slip-On Muffler Installation guideMade In USAFMF Racing Authorized DealerFAQCatalogAbout us
    Brand:
    FMF Racing
    Part Number:
    045590

    Reviews

    (4)
    Only authorized customers can leave a review on our website. We would love to know what you like or dislike about the product. Share your opinion on product quality, appearance, installation, and other characteristics.
    /5
    1-4 of 4 Reviews
    5 of 5
    Sounds Perfect! Five Stars
    I’m very pleased with the results. Installed this muffler without any problems. It fits exactly as described and provides a slight increase in top-end speed. And yes, it sounds really nice. Loud but not annoying. Just what I wanted!
    FMF Racing® - Powercore 4™ Slip-On Muffler
    Posted by James (Fort Worth, TX) / June 04, 20202018 Yamaha YFZ450R
    5 of 5
    Nice Product, Works As Described
    What a nice exhaust! Very easy to install. Everybody can do it in less than 15 minutes. Looks stunning and gives a slight increase in performance. The sound is miraculous. It makes heads turn when I pass by.
    FMF Racing® - Factory 4.1 SL™ 4-Stroke Silencer
    Posted by Barbara (Minotola, NJ) / March 03, 20202005 Yamaha YFZ450
    5 of 5
    High-Performance Exhaust
    This exhaust is shorter and lighter than my original muffler, and sits closer to the engine. My YFZ450R breathes easier with this exhaust, resulting in a significant power boost, especially at higher RPMs. And yeah, the carbon-fiber exhaust cap looks really cool.
    FMF Racing® - Factory 4.1 RCT™ Slip-On Muffler
    Posted by Kathleen (Washington Dc., DC) / May 06, 20192011 Yamaha YFZ450R
    5 of 5
    Moderate Sound and Performance
    Easy-to-install product with a bit more powerful sound at low RPMs. Expected it to sound more aggressive at higher RPMs. Pleased with its finish and look.
    Posted by Wali (Warr Acres, OK) / April 06, 20192018 Suzuki RMZ450

    Questions and Answers

    (0)
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