We are open Mon-Fri 9am-5pm

FREE SHIPPING to the lower 48 US states on orders $30 and over!! (**Heavy/Oversized items excluded)


FMF Factory 4.1 Mini Slip-On SS w/ Aluminum Muffler - All KLX140

  • Sale
  • $ 299.95


The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forward Engineering - moving the muffler closer to the motor to centralize mass. The Factory 4.1 RCT is constructed from only aerospace grade materials that meet our exacting specifications and is manufactured 100% at our Southern California factory.

-Available in Natural Aluminum Muffler with Carbon End Cap
-Massive Power gains throughout the RPM range.
-Huge weight savings
-New RTS (Rapid Tuning System)
-FMF uses the highest quality proprietary blend of alloy grade titanium made especially to our standards.
-Used with Stock OEM Header

    Kawasaki KLX140 (2008-2020)
    Kawasaki KLX140G (2017-2020)
    Kawasaki KLX140L (2008-2020)
    Kawasaki KLX140R (2021-Present)
    Kawasaki KLX140RF (2021-Present)
    Kawasaki KLX140RL (2021-Present)

    Notice: Closed Course Use Only
    Item ID: 042382
    Type: Slip-On
    Configuration: Single
    Const: Aluminum
    Finish: Natural
    Midpipe: Stainless Steel
    Endcap: Stainless Steel
    Spark Arrestor: Screen Insert (included)
    Carb Warning: no
    Quiet Insert: Quiet Insert (sold separately)