Enhance the power delivery of your two-stroke KTM with the FMF Fatty Pipe, manufacturer part number 025073 and vendor part number 025073. Designed for an all-around power increase throughout the power range, this performance expansion chamber helps improve throttle response and usable power across a broad portion of the RPM range. The Fatty model is a versatile choice for riders seeking balanced performance rather than a powerband focused exclusively on low-end torque or top-end speed.
Feature: Electro-nickel-plated pipe construction provides a durable, non-chip finish designed to resist discoloration. The factory pipe is the exception and features hand-pounded welds with no coating, replicating the appearance and construction style of works bikes. Feature: FMF Fatty performance is intended for broad, all-around power gains. FMF also offers Gnarly pipes for increased low-end torque and Factory Rev pipes for stronger middle- and upper-RPM performance, but this application is configured as a Fatty pipe.
Feature: Designed for off-road and motocross use, the FMF 025073 pipe is built to complement the power characteristics of compatible KTM two-stroke models. Fitment includes the 2004–2010 KTM 125 SX, the 2007–2008 KTM 144 SX, and the 2009 KTM 150 SX. Verify the motorcycle year and model before installation to ensure proper compatibility with the exhaust system, mounting points, and silencer.
FMF is the manufacturer and brand of this performance exhaust component. The product is identified by FMF part number 025073 and vendor part number 025073. Installation should be completed with the appropriate seals, springs, mounting hardware, and manufacturer-recommended procedures. Inspect the pipe and related exhaust components regularly, particularly after riding in rocky or challenging terrain.
Features:
- Electro-nickel-plated finish helps resist chipping and discoloration
- Fatty design delivers an all-around power increase throughout the power range
- Performance expansion chamber designed for compatible KTM two-stroke motocross models
- Fits 2004–2010 KTM 125 SX models
- Fits 2007–2008 KTM 144 SX models
- Fits 2009 KTM 150 SX
- Brand: FMF
- Manufacturer part number: 025073
- Vendor part number: 025073
Fitment:
2004 KTM 125 SX
2004 KTM 150 SX
2005 KTM 125 SX
2005 KTM 150 SX
2006 KTM 125 SX
2006 KTM 150 SX
2007 KTM 125 SX
2007 KTM 144 Sx
2007 KTM 150 SX
2008 KTM 125 SX
2008 KTM 144 Sx
2008 KTM 150 SX
2009 KTM 125 SX
2009 KTM 150 SX
2009 KTM 150 XC
2010 KTM 125 SX
2010 KTM 150 SX
2010 KTM 150 XC