The FMF Fatty Exhaust Pipe, manufacturer part number 025069 and vendor part number 025069, is designed to deliver an all-around power increase throughout the engine’s usable power range. This performance pipe is made for KTM two-stroke models and is an excellent choice for riders seeking stronger, more responsive power without narrowing the motorcycle’s overall powerband. Its fitment includes 2004–2010 KTM 250 SX models, 2004–2005 KTM 250 EXC models, and the 2004 KTM 300 EXC.
Features:
- All pipes are electro-nickel plated for a durable, non-chip finish that resists discoloration. The factory pipe is the exception and retains hand-pounded welds with no coating, matching the appearance and construction style of works bikes.
- The Fatty design provides balanced performance across the powerband, while other FMF pipe styles are available for riders prioritizing low-end torque or maximum top-end power.
- Built to support improved throttle response and stronger acceleration for motocross, trail, and off-road riding applications.
- Designed as a direct-fit performance replacement for the listed KTM models when used with the appropriate supporting components.
The FMF Fatty is suited to riders who want broad, usable performance rather than a pipe focused exclusively on one section of the RPM range. It can help improve acceleration out of turns, enhance overall engine response, and provide a more flexible power delivery for changing terrain and riding conditions. Confirm the motorcycle’s year, model, and existing exhaust configuration before installation to ensure proper fitment. This product is identified by FMF part number 025069 and is intended for the KTM applications listed above.
Features:
- Electro-nickel-plated finish resists chipping and discoloration
- Fatty design delivers an all-around power increase throughout the power range
- Supports improved throttle response and acceleration
- Fits selected 2004–2010 KTM 250 SX models
- Fits selected 2004–2005 KTM 250 EXC models and the 2004 KTM 300 EXC
- FMF manufacturer and vendor part number 025069
Fitment:
2003 KTM 250 EXC
2003 KTM 250 MXC
2003 KTM 250 SX
2003 KTM 300 EXC
2003 KTM 300 MXC
2004 KTM 250 EXC
2004 KTM 250 EXC-F
2004 KTM 250 EXC-G Racing
2004 KTM 250 SX
2004 KTM 250 SXS
2004 KTM 300 EXC
2004 KTM 300 MXC
2005 KTM 250 EXC
2005 KTM 250 EXC-F
2005 KTM 250 EXC-G Racing
2005 KTM 250 SX
2005 KTM 250 SX-F
2005 KTM 250 SXS
2005 KTM 300 EXC
2005 KTM 300 MXC
2006 KTM 250 EXC
2006 KTM 250 EXC-G Racing
2006 KTM 250 SX
2006 KTM 250 SX-F
2006 KTM 250 SXS
2006 KTM 250 SXS-F
2006 KTM 250 XC
2006 KTM 250 XC-W
2006 KTM 250 XCF-W
2006 KTM 300 EXC
2006 KTM 300 XC
2006 KTM 300 XC-W
2007 KTM 250 EXC
2007 KTM 250 EXC-G Racing
2007 KTM 250 SX
2007 KTM 250 SX-F
2007 KTM 250 SXS
2007 KTM 250 SXS-F
2007 KTM 250 XC
2007 KTM 250 XC-F
2007 KTM 250 XC-W
2007 KTM 250 XCF-W
2007 KTM 300 EXC
2007 KTM 300 XC
2007 KTM 300 XC-W
2008 KTM 250 EXC
2008 KTM 250 SX
2008 KTM 250 SX-F
2008 KTM 250 SXS-F
2008 KTM 250 XC
2008 KTM 250 XC-F
2008 KTM 250 XC-W
2008 KTM 250 XCF-W
2008 KTM 300 EXC
2008 KTM 300 XC
2008 KTM 300 XC-W
2009 KTM 250 EXC
2009 KTM 250 SX
2009 KTM 250 SX-F
2009 KTM 250 XC
2009 KTM 250 XC-F
2009 KTM 250 XC-W
2009 KTM 250 XCF-W
2009 KTM 300 EXC
2009 KTM 300 XC
2009 KTM 300 XC-W
2010 KTM 250 EXC
2010 KTM 250 SX
2010 KTM 250 SX-F
2010 KTM 250 XC
2010 KTM 250 XC-F
2010 KTM 250 XC-W
2010 KTM 250 XCF-W
2010 KTM 300 EXC
2010 KTM 300 XC
2010 KTM 300 XC-W