FMF Fatty Pipe

Fits The Following Bikes:

KTM 250 EXC 2017-2018
KTM 250 EXC SIX-DAYS 2017
KTM 250 EXC SIXDAYS TPI 2019
KTM 250 EXC TPI 2018-2019
KTM 250 EXC TPI SIX-DAYS 2018
KTM 250 SX 2017-2018
KTM 250 XC 2017-2018
KTM 250 XC-W 2017-2018
KTM 250 XC-W TPI 2018
KTM 250 XC-W TPI 2019

KTM 300 EXC 2017-2018
KTM 300 EXC CKD 2019
KTM 300 EXC SIXDAYS 2017
KTM 300 EXC SIXDAYS TPI 2019
KTM 300 EXC TPI 2018-2019
KTM 300 EXC TPI SIXDAYS 2018
KTM 300 XC 2017-2018
KTM 300 XC-W 2017-2018
KTM 300 XC-W SIXDAYS 2017-2018
KTM 300 XC-W SIXDAYS TPI 2019

HUSQVARNA TC 250 2017-2018
HUSQVARNA TX 300 2017-2018


KTM OEM replacement part: 55405007000

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



With well over 35 years of racing experience behind it, the Fatty Gold Series pipe delivers race proven performance. The 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.

-More tractable power, improved throttle control

-Provides power gains throughout entire power band

-Carbon steel with a nickel plated finish for maximum durability

-FMF Racing’s Tru-Flo stamping process ensures a perfect fit and optimum performance.

-Can be used with FMF or stock silencer (unless noted)

-Our most popular 2-stroke pipe

-O-Rings Included