FMF Fatty Expansion Pipe 024041 for 2000–2004 Yamaha YZ125

Increase power throughout the RPM range with the FMF Fatty Expansion Pipe, manufacturer part number 024041 and vendor part number 78-1340. Designed for 2000–2004 Yamaha YZ125 motorcycles, this performance exhaust pipe helps deliver a broader, more usable powerband for motocross and off-road riding. The Fatty model is an all-around performance choice for riders seeking stronger overall engine response rather than focusing exclusively on low-end torque or peak top-end power.

The FMF 024041 pipe is electro-nickel plated for a durable, non-chip finish that resists discoloration under normal riding conditions. This coating provides a clean appearance while helping protect the pipe from the demands of regular use. FMF offers multiple pipe profiles, including Gnarly models for increased low-end torque and Factory Rev models for stronger middle- and upper-RPM performance; the Fatty configuration is intended to provide balanced power across the range.

Fitment: This FMF Fatty pipe fits 2000, 2001, 2002, 2003, and 2004 Yamaha YZ125 models. Confirm the motorcycle year and exhaust configuration before installation. The pipe is designed as a direct-fit performance replacement for compatible Yamaha YZ125 applications and is intended to work with the motorcycle’s existing exhaust system components where applicable.

Features:

• Performance profile: Provides an all-around power increase throughout the power range.
• Pipe model: FMF Fatty expansion pipe for balanced engine response and a broader powerband.
• Finish: Electro-nickel plated for a durable, non-chip finish that resists discoloration.
• Fitment: Fits 2000–2004 Yamaha YZ125 motorcycles.
• Brand and part number: FMF manufacturer part number 024041; vendor part number 78-1340.