Collection: FMF Racing
FMF Racing is the world's leading manufacturer of high-performance exhaust systems for powersports. Founded in 1973, FMF (Flying Machine Fabrication) has spent over 50 years engineering exhaust systems that deliver real, measurable power gains for ATV, UTV, and snowmobile riders. Their lineup spans complete exhaust systems, slip-on mufflers, exhaust headers, heat shields, spark arrestors, packing kits, and rebuild hardware — every component engineered to maximize torque and horsepower while maintaining durability in demanding off-road conditions. Legendary product lines like the Q4 slip-on muffler, Powerbomb header, Hi-Flo HDR, Turbinecore 2 silencer, and Titanium series are trusted by riders at every level from weekend trail riders to competitive racers.
At JKL Offroad, we stock FMF Racing's full catalog of ATV, UTV, and snowmobile exhaust components. Whether you're bolting a Q4 onto a Yamaha Banshee, fitting a Powerbomb header to a Honda TRX450R, running a Turbinecore on a Kawasaki KFX, or upgrading the exhaust packing on your favorite trail machine, you'll find the right FMF part here. Every product ships directly with the quality and fitment FMF has refined over decades of motorsport engineering.
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Special Order SaleFMF Powercore 4 Honda - 041021
Regular price $359.99 USDRegular price$399.99 USDSale price $359.99 USDSpecial Order Sale -
Special Order SaleFMF Powercore 4 Honda - 041020
Regular price $359.99 USDRegular price$399.99 USDSale price $359.99 USDSpecial Order Sale -
Special Order SaleFMF Mini Moto Honda - 041017
Regular price $269.99 USDRegular price$299.99 USDSale price $269.99 USDSpecial Order Sale -
Special Order SaleFMF Mini Moto Honda - 041016
Regular price $251.99 USDRegular price$279.99 USDSale price $251.99 USDSpecial Order Sale -
Special Order SaleFMF Mini Moto Honda - 041015
Regular price $269.99 USDRegular price$299.99 USDSale price $269.99 USDSpecial Order Sale -
FMF Mini Moto Honda - 041014
Regular price $251.99 USDRegular price$279.99 USDSale price $251.99 USDSale -
FMF Red RCT External Carbon Replacement End Cap Kit - 040695
Regular price $116.99 USDRegular price$129.99 USDSale price $116.99 USDSale -
FMF Blue RCT External Carbon Replacement End Cap Kit - 040694
Regular price $116.99 USDRegular price$129.99 USDSale price $116.99 USDSale -
FMF RCT External Carbon Replacement End Cap Kit - Update - 040693
Regular price $116.99 USDRegular price$129.99 USDSale price $116.99 USDSale -
FMF Titanium Megabomb HDR Heat Shield (Universal) - 040692
Regular price $80.99 USDRegular price$89.99 USDSale price $80.99 USDSale -
FMF Ultra Quiet F4.1 RCT Quiet Core S/A Insert - 040689
Regular price $35.99 USDRegular price$39.99 USDSale price $35.99 USDSale -
FMF Hex Q4/F4.1 RCT Quiet Core S/A Insert - 040688
Regular price $35.99 USDRegular price$39.99 USDSale price $35.99 USDSale -
FMF Fact-4.1 RCT Replacement Spiral Retaining Ring - 040677
Regular price $5.39 USDRegular price$5.99 USDSale price $5.39 USDSale -
FMF P-Core 4/Q4 Hex S/S Replacement Rear Cone Cap - 040676
Regular price $44.99 USDRegular price$49.99 USDSale price $44.99 USDSale -
FMF Hex Q4 Quiet Core S/A Insert - 040671
Regular price $35.99 USDRegular price$39.99 USDSale price $35.99 USDSale -
FMF P-Core 4 Hex S/A Insert - 040670
Regular price $26.99 USDRegular price$29.99 USDSale price $26.99 USDSale -
Special Order SaleFMF Lt-R450'06-10/Rmz450'11-12 Slip Fit Flange Kit - 040664
Regular price $26.99 USDRegular price$29.99 USDSale price $26.99 USDSpecial Order Sale -
FMF Trx400Ex/Trx400X/Trx450R/Xr400 Alum Muffler Sleeve - 040654
Regular price $17.99 USDRegular price$19.99 USDSale price $17.99 USDSale -
FMF Kx450F'06-08/Klx450R'08-09 Alum. Muffler. Sleeve - 040653
Regular price $17.99 USDRegular price$19.99 USDSale price $17.99 USDSale -
FMF Alum HDR Sleeve-Use W/FMF Muffler To FMF HDR Honda - 040650
Regular price $17.99 USDRegular price$19.99 USDSale price $17.99 USDSale -
FMF RCT Carbon Replacement End Cap Kit - Original - 040643
Regular price $116.99 USDRegular price$129.99 USDSale price $116.99 USDSale -
FMF RCT Ti Replacement End Cap Kit - 040642
Regular price $53.99 USDRegular price$59.99 USDSale price $53.99 USDSale -
FMF RCT S/S Replacement End Cap Kit - 040641
Regular price $44.99 USDRegular price$49.99 USDSale price $44.99 USDSale -
FMF Factory 4.1 RCT Spark Arrestor Insert - 040638
Regular price $35.99 USDRegular price$39.99 USDSale price $35.99 USDSale -
Special Order SaleFMF Factory 4.1 Titanium Replacement Rear Cone Cap - 040637
Regular price $44.99 USDRegular price$49.99 USDSale price $44.99 USDSpecial Order Sale -
FMF P-Core 4/Q4/Ti P-Core S/S Slash Cut Repl. Rear Cone Cap - 040635
Regular price $31.49 USDRegular price$34.99 USDSale price $31.49 USDSale -
FMF P-Core 4/Q4 S/S Straight Cut Replacement Rear Cone Cap - 040634
Regular price $31.49 USDRegular price$34.99 USDSale price $31.49 USDSale -
Special Order SaleFMF Powercore 4 Universal - 040633
Regular price $323.99 USDRegular price$359.99 USDSale price $323.99 USDSpecial Order Sale -
Special Order SaleFMF Factory 4.1 Honda - 040502
Regular price $89.99 USDRegular price$99.99 USDSale price $89.99 USDSpecial Order Sale -
FMF Stainless HDR Heat Shield (Universal) - 040231
Regular price $31.49 USDRegular price$34.99 USDSale price $31.49 USDSale -
FMF Titanium HDR Heat Shield (Universal) - 040230
Regular price $44.99 USDRegular price$49.99 USDSale price $44.99 USDSale -
Special Order SaleFMF Long Strp Mnt W/Rubber Sleeve - Pcore 4, Q, Q2 - 040198
Regular price $15.29 USDRegular price$16.99 USDSale price $15.29 USDSpecial Order Sale -
Special Order SaleFMF Medium Strp Mnt W/Rubber Sleeve - Pcore 4, Q, Q2 - 040197
Regular price $15.29 USDRegular price$16.99 USDSale price $15.29 USDSpecial Order Sale -
Special Order SaleFMF Short Strp Mnt W/Rubber Sleeve - Pcore 4, Q, Q2 - 040196
Regular price $15.29 USDRegular price$16.99 USDSale price $15.29 USDSpecial Order Sale -
Special Order SaleFMF Ti 4 / Factory 4 Replacement Springs And Clips - 040186
Regular price $9.89 USDRegular price$10.99 USDSale price $9.89 USDSpecial Order Sale -
Special Order Sale
FMF P-Core-4 Modular Quiet Core Insert - 040171
Regular price $25.19 USDRegular price$27.99 USDSale price $25.19 USDSpecial Order Sale