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FMF Racing

Kawasaki Motocross FMF Fatty Pipe

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With well over 35 years of racing experience behind it, the FMF Kawasaki KX Fatty Gold Series Exhaust Pipe delivers race-proven performance. The Fatty broadens and smoothes out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and increased over-rev. No matter what type of riding you do, the Fatty has the benefits you’re looking for.

  • More tractable power, improved throttle control
  • Provides power gains throughout the entire power band
  • Carbon steel with a nickel-plated finish for maximum durability
  • FMF Racing’s Tru-Flo stamping process ensures a perfect fit and optimum performance.
  • Can be used with FMF or stock silencer (unless noted)
  • Our most popular 2-stroke pipe 
  • O-Rings Included

2003 Kawasaki KDX 50 FMF Fatty Pipe - 23049
2004 Kawasaki KDX 50 FMF Fatty Pipe - 23049
2005 Kawasaki KDX 50 FMF Fatty Pipe - 23049
2006 Kawasaki KDX 50 FMF Fatty Pipe - 23049

2003 Kawasaki KX65 FMF Fatty Pipe - 22034
2004 Kawasaki KX65 FMF Fatty Pipe - 22034
2005 Kawasaki KX65 FMF Fatty Pipe - 22034
2006 Kawasaki KX65 FMF Fatty Pipe - 22034
2007 Kawasaki KX65 FMF Fatty Pipe - 22034
2008 Kawasaki KX65 FMF Fatty Pipe - 22034
2009 Kawasaki KX65 FMF Fatty Pipe - 22034
2011 Kawasaki KX65 FMF Fatty Pipe - 22034
2012 Kawasaki KX65 FMF Fatty Pipe - 22034
2013 Kawasaki KX65 FMF Fatty Pipe - 22034
2014 Kawasaki KX65 FMF Fatty Pipe - 22034
2015 Kawasaki KX65 FMF Fatty Pipe - 22034
2016 Kawasaki KX65 FMF Fatty Pipe - 22034
2017 Kawasaki KX65 FMF Fatty Pipe - 22034
2018 Kawasaki KX65 FMF Fatty Pipe - 22034
2019 Kawasaki KX65 FMF Fatty Pipe - 22034
2020 Kawasaki KX65 FMF Fatty Pipe - 22034
2021 Kawasaki KX65 FMF Fatty Pipe - 22034

1998 Kawasaki KX80 FMF Fatty Pipe - 20050
1999 Kawasaki KX80 FMF Fatty Pipe - 20050
2000 Kawasaki KX80 FMF Fatty Pipe - 20050

2002 Kawasaki KX85 FMF Fatty Pipe - 22000
2003 Kawasaki KX85 FMF Fatty Pipe - 22000
2004 Kawasaki KX85 FMF Fatty Pipe - 22000
2005 Kawasaki KX85 FMF Fatty Pipe - 22000
2006 Kawasaki KX85 FMF Fatty Pipe - 22000
2007 Kawasaki KX85 FMF Fatty Pipe - 22000
2008 Kawasaki KX85 FMF Fatty Pipe - 22000
2009 Kawasaki KX85 FMF Fatty Pipe - 22000
2010 Kawasaki KX85 FMF Fatty Pipe - 22000
2011 Kawasaki KX85 FMF Fatty Pipe - 22000
2012 Kawasaki KX85 FMF Fatty Pipe - 22000
2013 Kawasaki KX85 FMF Fatty Pipe - 22000
2014 Kawasaki KX85 FMF Fatty Pipe - 22060
2015 Kawasaki KX85 FMF Fatty Pipe - 22060
2016 Kawasaki KX85 FMF Fatty Pipe - 22060
2017 Kawasaki KX85 FMF Fatty Pipe - 22060
2018 Kawasaki KX85 FMF Fatty Pipe - 22060
2019 Kawasaki KX85 FMF Fatty Pipe - 22060
2020 Kawasaki KX85 FMF Fatty Pipe - 22060
2021 Kawasaki KX85 FMF Fatty Pipe - 22060

1998 Kawasaki KX100 FMF Fatty Pipe - 20050
1999 Kawasaki KX100 FMF Fatty Pipe - 20050
2000 Kawasaki KX100 FMF Fatty Pipe - 20050
2001 Kawasaki KX100 FMF Fatty Pipe - 20050
2002 Kawasaki KX100 FMF Fatty Pipe - 20050
2003 Kawasaki KX100 FMF Fatty Pipe - 20050
2004 Kawasaki KX100 FMF Fatty Pipe - 20050
2005 Kawasaki KX100 FMF Fatty Pipe - 20050
2006 Kawasaki KX100 FMF Fatty Pipe - 20050
2007 Kawasaki KX100 FMF Fatty Pipe - 20050
2008 Kawasaki KX100 FMF Fatty Pipe - 20050
2009 Kawasaki KX100 FMF Fatty Pipe - 20050
2011 Kawasaki KX100 FMF Fatty Pipe - 20050
2012 Kawasaki KX100 FMF Fatty Pipe - 20050
2013 Kawasaki KX100 FMF Fatty Pipe - 20050
2014 Kawasaki KX100 FMF Fatty Pipe - 22060
2015 Kawasaki KX100 FMF Fatty Pipe - 22060
2016 Kawasaki KX100 FMF Fatty Pipe - 22060
2017 Kawasaki KX100 FMF Fatty Pipe - 22060
2018 Kawasaki KX100 FMF Fatty Pipe - 22060
2019 Kawasaki KX100 FMF Fatty Pipe - 22060
2020 Kawasaki KX100 FMF Fatty Pipe - 22060
2021 Kawasaki KX100 FMF Fatty Pipe - 22060

1990 Kawasaki KX125 FMF Fatty Pipe - 20039
1991 Kawasaki KX125 FMF Fatty Pipe - 20039
1995 Kawasaki KX125 FMF Fatty Pipe - 20048
1996 Kawasaki KX125 FMF Fatty Pipe - 20048
1997 Kawasaki KX125 FMF Fatty Pipe - 20048
1998 Kawasaki KX125 FMF Fatty Pipe - 22003
1999 Kawasaki KX125 FMF Fatty Pipe - 22003
2000 Kawasaki KX125 FMF Fatty Pipe - 22003
2001 Kawasaki KX125 FMF Fatty Pipe - 22003
2002 Kawasaki KX125 FMF Fatty Pipe - 22003
2003 Kawasaki KX125 FMF Fatty Pipe - 22012
2004 Kawasaki KX125 FMF Fatty Pipe - 22044
2005 Kawasaki KX125 FMF Fatty Pipe - 22048

1989 Kawasaki KDX 200 FMF Fatty Pipe - 20037
1990 Kawasaki KDX 200 FMF Fatty Pipe - 20037
1991 Kawasaki KDX 200 FMF Fatty Pipe - 20037
1992 Kawasaki KDX 200 FMF Fatty Pipe - 20037
1993 Kawasaki KDX 200 FMF Fatty Pipe - 20037
1994 Kawasaki KDX 200 FMF Fatty Pipe - 20037

1995 Kawasaki KDX 200 FMF Fatty Pipe - 20056
1996 Kawasaki KDX 200 FMF Fatty Pipe - 20056
1997 Kawasaki KDX 200 FMF Fatty Pipe - 20056
1998 Kawasaki KDX 200 FMF Fatty Pipe - 20056
1999 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2000 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2001 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2002 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2003 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2004 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2005 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2006 Kawasaki KDX 200 FMF Fatty Pipe - 20056

1997 Kawasaki KDX 220R FMF Fatty Pipe - 20056
1998 Kawasaki KDX 220R FMF Fatty Pipe - 20056
1999 Kawasaki KDX 220R FMF Fatty Pipe - 20056
2000 Kawasaki KDX 220R FMF Fatty Pipe - 20056
2001 Kawasaki KDX 220R FMF Fatty Pipe - 20056
2002 Kawasaki KDX 220R FMF Fatty Pipe - 20056
2003 Kawasaki KDX 220R FMF Fatty Pipe - 20056
2004 Kawasaki KDX 220R FMF Fatty Pipe - 20056
2005 Kawasaki KDX 220R FMF Fatty Pipe - 20056

1991 Kawasaki KDX 250 FMF Fatty Pipe - 20042
1992 Kawasaki KDX 250 FMF Fatty Pipe - 20042
1992 Kawasaki KX250 FMF Fatty Pipe - 20042
1993 Kawasaki KDX 250 FMF Fatty Pipe - 20042
1993 Kawasaki KX250 FMF Fatty Pipe - 20042
1994 Kawasaki KDX 250 FMF Fatty Pipe - 20042

1994 Kawasaki KX250 FMF Fatty Pipe - 20045
1995 Kawasaki KX250 FMF Fatty Pipe - 20045
1996 Kawasaki KX250 FMF Fatty Pipe - 20045

1997 Kawasaki KX250 FMF Fatty Pipe - 20054
1998 Kawasaki KX250 FMF Fatty Pipe - 20054
1999 Kawasaki KX250 FMF Fatty Pipe - 20054
2000 Kawasaki KX250 FMF Fatty Pipe - 20054
2001 Kawasaki KX250 FMF Fatty Pipe - 22006
2002 Kawasaki KX250 FMF Fatty Pipe - 22006
2003 Kawasaki KX250 FMF Fatty Pipe - 22015
2004 Kawasaki KX250 FMF Fatty Pipe - 22040
2005 Kawasaki KX250 FMF Fatty Pipe - 22052
2006 Kawasaki KX250 FMF Fatty Pipe - 22052
2007 Kawasaki KX250 FMF Fatty Pipe - 22052

1988 Kawasaki KX500 FMF Fatty Pipe - 20038
1989 Kawasaki KX500 FMF Fatty Pipe - 20038
1990 Kawasaki KX500 FMF Fatty Pipe - 20038
1991 Kawasaki KX500 FMF Fatty Pipe - 20038
1992 Kawasaki KX500 FMF Fatty Pipe - 20038
1993 Kawasaki KX500 FMF Fatty Pipe - 20038
1994 Kawasaki KX500 FMF Fatty Pipe - 20038
1995 Kawasaki KX500 FMF Fatty Pipe - 20038
1996 Kawasaki KX500 FMF Fatty Pipe - 20038
1997 Kawasaki KX500 FMF Fatty Pipe - 20038
1998 Kawasaki KX500 FMF Fatty Pipe - 20038
1999 Kawasaki KX500 FMF Fatty Pipe - 20038
2000 Kawasaki KX500 FMF Fatty Pipe - 20038
2001 Kawasaki KX500 FMF Fatty Pipe - 20038
2002 Kawasaki KX500 FMF Fatty Pipe - 20038
2003 Kawasaki KX500 FMF Fatty Pipe - 20038
2004 Kawasaki KX500 FMF Fatty Pipe - 20038

1995 Kawasaki KDX 200 FMF Fatty Pipe - 20056
1996 Kawasaki KDX 200 FMF Fatty Pipe - 20056
1997 Kawasaki KDX 200 FMF Fatty Pipe - 20056
1998 Kawasaki KDX 200 FMF Fatty Pipe - 20056
1999 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2000 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2001 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2002 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2003 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2004 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2005 Kawasaki KDX 200 FMF Fatty Pipe - 20056
2006 Kawasaki KDX 200 FMF Fatty Pipe - 20056

1997 Kawasaki KDX 220R FMF Fatty Pipe - 20056
1998 Kawasaki KDX 220R FMF Fatty Pipe - 20056
1999 Kawasaki KDX 220R FMF Fatty Pipe - 20056
2000 Kawasaki KDX 220R FMF Fatty Pipe - 20056
2001 Kawasaki KDX 220R FMF Fatty Pipe - 20056
2002 Kawasaki KDX 220R FMF Fatty Pipe - 20056
2003 Kawasaki KDX 220R FMF Fatty Pipe - 20056
2004 Kawasaki KDX 220R FMF Fatty Pipe - 20056
2005 Kawasaki KDX 220R FMF Fatty Pipe - 20056

NOTE: Generic images and may not depict actual items.

Ships via UPS or USPS Priority.  All "Open Box" items are excluded from our free shipping offer and are not returnable.

International Customers: Shipping charges reflect transportation costs only and do not include international brokerage fees, duties, GST/HST/PST, or other applicable taxes. Customers outside the United States may receive a separate invoice directly from the carrier for these additional charges.

If your order arrives damaged or appears defective, please submit a claim through our Customer Service Order Damage Form. Our team will review your submission and contact you within 24 hours (excluding weekends and holidays). All damage/defect claims must be reported within 48 hours of delivery.

An RMA# (Return Merchandise Authorization Number) is required for all returns.

Returns must be initiated through your Customer Account Portal within 10 days of delivery.

Returned items must be:

  • Unused
  • Uninstalled
  • Unmodified
  • Complete with all original packaging, hardware, manuals, and accessories

Returns not related to damage, defect, or an Atlantic Jet Sports shipping error are subject to a 20% restocking fee. Customers are responsible for return shipping costs.

Unauthorized returns will be refused at our shipping dock.

[View Full Return Policy & Return Instructions]

Non‑Returnable Items

The following items are final sale and not eligible for return, exchange, or store credit:

• Seat Covers
• Mat Kits, Mat Sheets
• Chin Pads
• Waterboxes
• Aqua Cart & Factory Zero Transportation/Beach Dollies, Totes, Display Carts, and all related Parts/Accessories
• Watercraft Stands
• Aqua Performance Watercraft Steps
• RRP Handlepoles
• Special Order Items
• Close‑Out Items

Electrical Components (non‑returnable):
Starter Motors, Regulators, Relays, CDI Units, Ignition Coils, Stator Coils, Stator Assemblies, Fuel Injectors.

All warranties are those of the manufacturer and not Atlantic Jet Sports. We will be happy to assist you in filing a warranty claim with the manufacturer, but please remember that the manufacturer determines whether a claim is approved or denied. Any modification to a product voids your warranty. All claims for consequential, physical, incidental, or special damage are hereby excluded.

Performance Product Use & Compliance Notice

Atlantic Jet Sports supplies high‑performance components engineered solely for closed‑course racing and sanctioned competition. These parts are not designed, tested, certified, or warranted for use on public waterways or on watercraft equipped with emissions‑controlled systems.

Installing or using these components may change the watercraft’s safety characteristics, emissions compliance, or legal classification. Using competition‑only products on public waterways may violate federal, state, or local regulations.

By purchasing, installing, or operating a watercraft equipped with these components, the user acknowledges and accepts full responsibility for all associated risks—including, but not limited to, personal injury, property damage, mechanical failure, or legal consequences. The user further agrees that Atlantic Jet Sports assumes no liability for damages arising from improper installation, misuse, or operation outside of competition environments.

For best performance and safety, Atlantic Jet Sports strongly recommends installation by a qualified technician experienced with high‑performance Personal Watercraft systems.

Product Installation Disclaimer

⚠️ Warning — Professional Installation Required

• Ensure the hull is fully ventilated and free of fuel vapors before using electric or battery‑powered tools. Failure to do so may result in fire, explosion, serious injury, or death.
• Disconnect the battery before performing any installation or maintenance to prevent accidental ignition, electrical shock, or unintended engine engagement.
• Allow the engine, exhaust, and surrounding components to cool completely before beginning work.
• No smoking, open flames, or spark‑producing devices should be present during installation.

This product is not intended for use on watercraft equipped with pollution‑control systems. Modifying or removing emissions‑related components may violate state or local laws and may render the watercraft illegal for use outside of competition.