Fatty Exhaust Pipe 19-23 KTM Husqvarna GasGas 250 300 - FMF 025241

Celebrating more than 35 years of race engineering, the FMF Fatty 025241 Gold Series expansion pipe sets the benchmark for 2-stroke performance. Designed to broaden and smooth the power curve, this pipe delivers substantial gains across the entire rev range—enhancing low-end grunt, midrange punch, and top-end over-rev. The Fatty ensures precise fitment with FMF’s proprietary Tru-Flo stamping process and is engineered for riders seeking increased tractable power and throttle control in any scenario.

Features

• Significantly broadens and smooths power curve for all-around boost


• Delivers increased low-end, midrange, and over-rev performance


• Improves throttle control and provides more usable power


• Fabricated from carbon steel with a durable nickel-plated finish


• Tru-Flo process guarantees a precision fit and maximum performance


• Compatible with both FMF and OEM silencers (unless noted otherwise)


• O-rings included for secure installation


• FMF’s most popular 2-stroke expansion chamber, race-proven reliability

Specifications

• Item ID: 025241


• Type: Pipes


• Weight: 5.0 lbs


• Carb Warning: No

Vehicle Fitment

GAS GAS

• EC 250 (2021–2023)


• EC 300 (2021–2023)


• EX 250 (2022)


• EX 300 (2021–2022)


• MC 250 (2022–2023)

HUSQVARNA

• TC 250 (2019–2022)


• TE 250 (2023)


• TE 250i (2020–2022)


• TE 300 (2023)


• TE 300i (2020–2022)


• TE 300i Rockstar Edition (2021)


• TX 300 (2019)


• TX 300i (2020–2022)

KTM

• 250 SX (2019–2022)


• 250 XC (2019)


• 250 XC TPI (2020–2022)


• 250 XC-W (2023)


• 250 XC-W TPI (2020–2022)


• 300 EXC TPI Erzbergrodeo (2020–2021)


• 300 XC (2019)


• 300 XC TPI (2020–2022)


• 300 XC-W (2023)


• 300 XC-W TPI (2020–2022)