Boost the performance of your 1999 Yamaha YZ125 with the FMF Fatty Exhaust Pipe, manufacturer part number 020150 and vendor part number 78-1380. Designed for an all-around power increase, this pipe helps broaden power delivery throughout the engine’s usable power range. It is a direct-fit performance upgrade for riders seeking stronger, more responsive acceleration without changing the motorcycle’s fundamental riding characteristics.
Feature: Electro-nickel-plated finish provides a durable, non-chip surface that resists discoloration during normal use. The coating helps protect the pipe while maintaining a clean appearance through demanding off-road conditions. The Fatty model is tuned for balanced performance across the powerband, making it a versatile choice for trail riding, motocross, and general performance applications.
FMF offers additional pipe profiles for riders with specific power-delivery goals. Gnarly pipes are built for increased low-end torque on applicable late-model 200cc-and-up motorcycles, while Factory Rev pipes emphasize midrange and upper-RPM performance for riders who need more top-end power, longer pull between shifts, or improved performance in deep berms and sand. This listing is for the Fatty model and fits the 1999 Yamaha YZ125.
Installation should be completed using appropriate exhaust gaskets, springs, mounts, and hardware as required by the motorcycle manufacturer. Inspect the pipe and mounting points regularly, particularly after off-road riding, to help maintain proper fit and performance. The FMF brand and part number 020150 identify this exhaust component for fitment reference.
Features:
- Electro-nickel-plated finish for a durable, non-chip surface that resists discoloration
- Fatty performance profile delivers an all-around power increase throughout the power range
- Designed specifically to fit the 1999 Yamaha YZ125
- FMF manufacturer part number 020150
- Vendor part number 78-1380
- Performance exhaust design suited for motocross, trail riding, and off-road use
Fitment:
1999 Yamaha YZ125