Slip-Ons

The Q4 employs intricate chambers, baffles and proprietary multistage packing materialWith the Q4 you don?t need to hear the power, just feel the power!Less sound equals more groundPower gains throughout the entire rpm rangeSpark arrestor includedPounds...

Developed over years of championship off-road racingTwin-stage core design for lower sound output and extended life of packing materialComes standard with spark arrestorFits stock and PowerBomb header Yamaha -- YFZ 450R 4x2 -- (2016, 2015, 2012, 2014,...

The Q series features advanced engineering to precisely locate baffles and chambers to absorb soundLess mass to enhance power-to-weight ratioQuiet power with minimal sacrifice for performanceDeveloped over years of championship off-road racingTwin-stage...

Developed over years of championship off-road racingTwin-stage core design for lower sound output and extended life of packing materialComes standard with spark arrestorFits stock and PowerBomb header Yamaha -- YFZ 450 4x2 -- (2007, 2006, 2004, 2005,...

The Q series features advanced engineering to precisely locate baffles and chambers to absorb soundLess mass to enhance power-to-weight ratioQuiet power with minimal sacrifice for performanceDeveloped over years of championship off-road racingTwin-stage...

The Q series features advanced engineering to precisely locate baffles and chambers to absorb soundLess mass to enhance power-to-weight ratioQuiet power with minimal sacrifice for performanceDeveloped over years of championship off-road racingTwin-stage...

Fmf Q4 Hex Slip-On Muffler 043380 Suzuki -- DR 650 SE -- (2012, 2014, 2016, 2018, 2015, 2019, 2020, 2013, 2017, 2004, 2007, 2010, 2002, 1997, 2011, 1998, 1999, 2005, 2006, 2001, 2009, 2000, 2003, 2008, 2022, 2021)

Developed over years of championship off-road racingEmploys intricate chambers, baffles and proprietary multistage packing materialMax Sound output 96dBConstructed from aircraft grade aluminum and high strength stainless steelUse with FMF or Stock OEM...

Fmf Q4 Hex Slip-On Muffler 042402 Kawasaki -- KX 450 -- (2024)

Fmf Q4 Hex Slip-On Muffler 042393 Kawasaki -- KX 250 -- (2021, 2022, 2023, 2024); Kawasaki -- KX 250 X -- (2022, 2021)

Developed over years of championship off-road racingTwin-stage core design for lower sound output and extended life of packing materialComes standard with spark arrestor Kawasaki -- KLX 300R -- (2020)

The Q4 employs intricate chambers, baffles and proprietary multistage packing materialWith the Q4 you don?t need to hear the power, just feel the power!Less sound equals more groundPower gains throughout the entire rpm rangeSpark arrestor includedPounds...