FMF Factory Fatty Pipe

Fits The Following Bikes:

KTM 125 SX 2019-2022
KTM 125 XC 2022
KTM 144 SX 2019-2022
KTM 150 SX 2019-2022

Husqvarna TC 125 2019-2022

GasGas MC 125 2021-2023


KTM OEM replacement part: 50505007100
KTM OEM replacement part: 50505007000

For compatibility with your bike model please check the KTM spare parts catalogue.



The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams. It shares many of the same characteristics with its’ craftsmanship and material quality. The Factory 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.

- Lighter 20 gauge steel used for the body of the pipe.
-19 Gauge steel used for the header portion.
- Includes O-rings on most models
- Hand pounded seams for smooth flow transitions.
- O-Rings Included