KTM Motocross FMF Fatty Pipe
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With well over 35 years of racing experience behind it, the FMF KTM 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
2001 KTM 50 SX Pro Sr LC FMF Fatty Pipe - 025052
2002 KTM 50 SX Pro Sr LC FMF Fatty Pipe - 025052
2003 KTM 50 SX Pro Sr LC FMF Fatty Pipe - 025052
2004 KTM 50 SX Pro Sr LC FMF Fatty Pipe - 025052
2005 KTM 50 SX Pro Sr LC FMF Fatty Pipe - 025052
2006 KTM 50 SX Pro Sr LC FMF Fatty Pipe - 025052
2009 KTM 50 SX FMF Fatty Pipe - 025150
2010 KTM 50 SX FMF Fatty Pipe - 025150
2011 KTM 50 SX FMF Fatty Pipe - 025150
2012 KTM 50 SX FMF Fatty Pipe - 025150
2013 KTM 50 SX FMF Fatty Pipe - 025150
2014 KTM 50 SX FMF Fatty Pipe - 025150
2015 KTM 50 SX FMF Fatty Pipe - 025150
2016 KTM 50 SX FMF Fatty Pipe - 025150
2017 KTM 50 SX FMF Fatty Pipe - 025150
2018 KTM 50 SX FMF Fatty Pipe - 025150
2019 KTM 50 SX FMF Fatty Pipe - 025150
2020 KTM 50 SX FMF Fatty Pipe - 025150
2021 KTM 50 SX FMF Fatty Pipe - 025150
2022 KTM 50 SX FMF Fatty Pipe - 025150
2002 KTM 65 SX FMF Fatty Pipe - 025006
2003 KTM 65 SX FMF Fatty Pipe - 025006
2004 KTM 65 SX FMF Fatty Pipe - 025006
2005 KTM 65 SX FMF Fatty Pipe - 025006
2006 KTM 65 SX FMF Fatty Pipe - 025006
2007 KTM 65 SX FMF Fatty Pipe - 025006
2008 KTM 65 SX FMF Fatty Pipe - 025006
2008 KTM 65 XC FMF Fatty Pipe - 025006
2009 KTM 65 SX FMF Fatty Pipe - 025151
2010 KTM 65 SX FMF Fatty Pipe - 025151
2011 KTM 65 SX FMF Fatty Pipe - 025151
2012 KTM 65 SX FMF Fatty Pipe - 025151
2013 KTM 65 SX FMF Fatty Pipe - 025151
2014 KTM 65 SX FMF Fatty Pipe - 025151
2015 KTM 65 SX FMF Fatty Pipe - 025151
2016 KTM 65 SX FMF Fatty Pipe - 025197
2017 KTM 65 SX FMF Fatty Pipe - 025197
2018 KTM 65 SX FMF Fatty Pipe - 025197
2019 KTM 65 SX FMF Fatty Pipe - 025197
2020 KTM 65 SX FMF Fatty Pipe - 025197
2021 KTM 65 SX FMF Fatty Pipe - 025197
2022 KTM 65 SX FMF Fatty Pipe - 025197
2003 KTM 85 SX (17/14) FMF Fatty Pipe - 025060
2004 KTM 85 SX (17/14) FMF Fatty Pipe - 025060
2005 KTM 85 SX (17/14) FMF Fatty Pipe - 025060
2005 KTM 85 SX (19/16) FMF Fatty Pipe - 025060
2006 KTM 85 SX (17/14) FMF Fatty Pipe - 025088
2006 KTM 85 SX (19/16) FMF Fatty Pipe - 025088
2007 KTM 85 SX (17/14) FMF Fatty Pipe - 025088
2007 KTM 85 SX (19/16) FMF Fatty Pipe - 025088
2008 KTM 85 SX (17/14) FMF Fatty Pipe - 025088
2008 KTM 85 SX (19/16) FMF Fatty Pipe - 025088
2009 KTM 85 SX (17/14) FMF Fatty Pipe - 025088
2009 KTM 85 SX (19/16) FMF Fatty Pipe - 025088
2010 KTM 85 SX (17/14) FMF Fatty Pipe - 025088
2010 KTM 85 SX (19/16) FMF Fatty Pipe - 025088
2011 KTM 85 SX (17/14) FMF Fatty Pipe - 025088
2012 KTM 85 SX (17/14) FMF Fatty Pipe - 025088
2013 KTM 85 SX (17/14) FMF Fatty Pipe - 025088
2013 KTM 85 SX (19/16) FMF Fatty Pipe - 025088
2014 KTM 85 SX (17/14) FMF Fatty Pipe - 025088
2014 KTM 85 SX (19/16) FMF Fatty Pipe - 025088
2015 KTM 85 SX (17/14) FMF Fatty Pipe - 025088
2015 KTM 85 SX (19/16) FMF Fatty Pipe - 025088
2016 KTM 85 SX (17/14) FMF Fatty Pipe - 025088
2017 KTM 85 SX (17/14) FMF Fatty Pipe - 025088
2017 KTM 85 SX (19/16) FMF Fatty Pipe - 025088
2022 KTM 85 SX (19/16) FMF Fatty Pipe - 025221
2022 KTM 85 SX (17/14) FMF Fatty Pipe - 025221
2021 KTM 85 SX (19/16) FMF Fatty Pipe - 025221
2021 KTM 85 SX (17/14) FMF Fatty Pipe - 025221
2020 KTM 85 SX (19/16) FMF Fatty Pipe - 025221
2020 KTM 85 SX (17/14) FMF Fatty Pipe - 025221
2019 KTM 85 SX (17/14) FMF Fatty Pipe - 025221
2018 KTM 85 SX (17/14) FMF Fatty Pipe - 025221
2000 KTM 125 SX FMF Fatty Pipe - 025019
2001 KTM 125 SX FMF Fatty Pipe - 025019
2002 KTM 125 SX FMF Fatty Pipe - 025019
2003 KTM 125 SX FMF Fatty Pipe - 025019
2004 KTM 125 SX FMF Fatty Pipe - 025073
2004 KTM 150 SX FMF Fatty Pipe - 025073
2005 KTM 125 SX FMF Fatty Pipe - 025073
2005 KTM 150 SX FMF Fatty Pipe - 025073
2006 KTM 125 SX FMF Fatty Pipe - 025073
2006 KTM 150 SX FMF Fatty Pipe - 025073
2007 KTM 125 SX FMF Fatty Pipe - 025073
2007 KTM 144 Sx FMF Fatty Pipe - 025073
2007 KTM 150 SX FMF Fatty Pipe - 025073
2008 KTM 125 SX FMF Fatty Pipe - 025073
2008 KTM 144 Sx FMF Fatty Pipe - 025073
2008 KTM 150 SX FMF Fatty Pipe - 025073
2009 KTM 125 SX FMF Fatty Pipe - 025073
2009 KTM 150 SX FMF Fatty Pipe - 025073
2010 KTM 125 SX FMF Fatty Pipe - 025073
2010 KTM 150 SX FMF Fatty Pipe - 025073
2011 KTM 125 SX FMF Fatty Pipe - 025119
2011 KTM 150 SX FMF Fatty Pipe - 025119
2011 KTM 150 XC FMF Fatty Pipe - 025119
2012 KTM 125 SX FMF Fatty Pipe - 025119
2012 KTM 150 SX FMF Fatty Pipe - 025119
2012 KTM 150 XC FMF Fatty Pipe - 025119
2013 KTM 125 SX FMF Fatty Pipe - 025119
2013 KTM 150 SX FMF Fatty Pipe - 025119
2013 KTM 150 XC FMF Fatty Pipe - 025119
2014 KTM 125 SX FMF Fatty Pipe - 025119
2014 KTM 150 SX FMF Fatty Pipe - 025119
2014 KTM 150 XC FMF Fatty Pipe - 025119
2015 KTM 125 SX FMF Fatty Pipe - 025119
2015 KTM 150 SX FMF Fatty Pipe - 025119
2015 KTM 150 XC FMF Fatty Pipe - 025119
2016 KTM 125 SX FMF Fatty Pipe - 025182
2017 KTM 125 SX FMF Fatty Pipe - 025182
2017 KTM 150 XC-W FMF Fatty Pipe - 025182
2018 KTM 125 SX FMF Fatty Pipe - 025182
2018 KTM 150 XC-W FMF Fatty Pipe - 025182
2019 KTM 150 XC-W FMF Fatty Pipe - 025182
2019 KTM 125 SX FMF Fatty Pipe - 025238
2019 KTM 150 SX FMF Fatty Pipe - 025238
2020 KTM 125 SX FMF Fatty Pipe - 025238
2020 KTM 150 SX FMF Fatty Pipe - 025238
2021 KTM 125 SX FMF Fatty Pipe - 025238
2021 KTM 150 SX FMF Fatty Pipe - 025238
2016 KTM 125 SX FMF Fatty Pipe - 025182
2017 KTM 125 SX FMF Fatty Pipe - 025182
2017 KTM 150 XC-W FMF Fatty Pipe - 025182
2018 KTM 125 SX FMF Fatty Pipe - 025182
2018 KTM 150 XC-W FMF Fatty Pipe - 025182
2019 KTM 150 XC-W FMF Fatty Pipe - 025182
2003 KTM 200 Sx FMF Fatty Pipe - 025040
2004 KTM 200 Sx FMF Fatty Pipe - 025040
2016 KTM Freeride 250R 4-Stroke FMF Fatty Pipe - 025194
2004 KTM 250 EXC FMF Fatty Pipe - 025069
2004 KTM 250 SX FMF Fatty Pipe - 025069
2004 KTM 300 EXC FMF Fatty Pipe - 025069
2004 KTM 300 MXC FMF Fatty Pipe - 025069
2005 KTM 250 EXC FMF Fatty Pipe - 025069
2005 KTM 250 SX FMF Fatty Pipe - 025069
2005 KTM 300 EXC FMF Fatty Pipe - 025069
2005 KTM 300 MXC FMF Fatty Pipe - 025069
2006 KTM 250 SX FMF Fatty Pipe - 025069
2006 KTM 300 EXC FMF Fatty Pipe - 025069
2007 KTM 250 SX FMF Fatty Pipe - 025069
2007 KTM 300 EXC FMF Fatty Pipe - 025069
2008 KTM 250 SX FMF Fatty Pipe - 025069
2009 KTM 250 SX FMF Fatty Pipe - 025069
2010 KTM 250 SX FMF Fatty Pipe - 025069
2011 KTM 250 SX FMF Fatty Pipe - 025130
2011 KTM 250 XC FMF Fatty Pipe - 025130
2011 KTM 250 XC-W FMF Fatty Pipe - 025130
2011 KTM 300 XC FMF Fatty Pipe - 025130
2011 KTM 300 XC-W FMF Fatty Pipe - 025130
2012 KTM 250 SX FMF Fatty Pipe - 025130
2012 KTM 250 XC FMF Fatty Pipe - 025130
2012 KTM 250 XC-W FMF Fatty Pipe - 025130
2012 KTM 300 XC FMF Fatty Pipe - 025130
2012 KTM 300 XC-W FMF Fatty Pipe - 025130
2013 KTM 250 SX FMF Fatty Pipe - 025130
2013 KTM 250 XC FMF Fatty Pipe - 025130
2013 KTM 250 XC-W FMF Fatty Pipe - 025130
2013 KTM 300 XC FMF Fatty Pipe - 025130
2013 KTM 300 XC-W FMF Fatty Pipe - 025130
2014 KTM 250 SX FMF Fatty Pipe - 025130
2014 KTM 250 XC FMF Fatty Pipe - 025130
2014 KTM 250 XC-W FMF Fatty Pipe - 025130
2014 KTM 300 XC FMF Fatty Pipe - 025130
2014 KTM 300 XC-W FMF Fatty Pipe - 025130
2015 KTM 250 SX FMF Fatty Pipe - 025130
2015 KTM 250 XC FMF Fatty Pipe - 025130
2015 KTM 250 XC-W FMF Fatty Pipe - 025130
2015 KTM 300 XC FMF Fatty Pipe - 025130
2015 KTM 300 XC-W FMF Fatty Pipe - 025130
2016 KTM 250 SX FMF Fatty Pipe - 025130
2016 KTM 250 XC FMF Fatty Pipe - 025130
2016 KTM 250 XC-W FMF Fatty Pipe - 025130
2016 KTM 300 XC FMF Fatty Pipe - 025130
2016 KTM 300 XC-W FMF Fatty Pipe - 025130
2017 KTM 250 SX FMF Fatty Pipe - 025202
2017 KTM 250 XC FMF Fatty Pipe - 025202
2017 KTM 250 XC-W FMF Fatty Pipe - 025202
2017 KTM 300 XC FMF Fatty Pipe - 025202
2017 KTM 300 XC-W FMF Fatty Pipe - 025202
2018 KTM 250 SX FMF Fatty Pipe - 025202
2018 KTM 250 XC FMF Fatty Pipe - 025202
2018 KTM 250 XC-W FMF Fatty Pipe - 025202
2018 KTM 250 XC-W TPi FMF Fatty Pipe - 025202
2018 KTM 300 XC FMF Fatty Pipe - 025202
2018 KTM 300 XC-W FMF Fatty Pipe - 025202
2019 KTM 250 XC FMF Fatty Pipe - 025202
2019 KTM 250 XC-W TPi FMF Fatty Pipe - 025202
2019 KTM 300 XC FMF Fatty Pipe - 025202
2019 KTM 300 XC-W TPi FMF Fatty Pipe - 025202
2019 KTM 250 SX FMF Fatty Pipe - 025241
2019 KTM 250 XC FMF Fatty Pipe - 025241
2019 KTM 300 XC FMF Fatty Pipe - 025241
2020 KTM 250 SX FMF Fatty Pipe - 025241
2020 KTM 250 XC TPi FMF Fatty Pipe - 025241
2020 KTM 250 XC-W TPi FMF Fatty Pipe - 025241
2020 KTM 300 XC TPi FMF Fatty Pipe - 025241
2020 KTM 300 XC-W TPi FMF Fatty Pipe - 025241
2021 KTM 250 SX FMF Fatty Pipe - 025241
2021 KTM 250 XC TPi FMF Fatty Pipe - 025241
2021 KTM 250 XC-W TPi FMF Fatty Pipe - 025241
2021 KTM 300 XC TPi FMF Fatty Pipe - 025241
2021 KTM 300 XC-W TPi FMF Fatty Pipe - 025241
2022 KTM 250 SX FMF Fatty Pipe - 025241
2022 KTM 250 XC TPi FMF Fatty Pipe - 025241
2022 KTM 300 XC TPi FMF Fatty Pipe - 025241
NOTE: Generic images and may not depict actual items.
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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.