The FMF Fatty Expansion Pipe is designed to deliver an all-around power increase throughout the engine’s power range. This performance exhaust pipe is engineered for riders who want stronger, more responsive power without sacrificing usable performance across the rev band. The Fatty profile is an excellent choice for recreational riding, motocross, and off-road applications where balanced power delivery is important.
Each FMF pipe is electro-nickel plated for a durable, non-chip finish that resists discoloration under normal riding conditions. The finish helps protect the pipe from everyday wear while maintaining a clean appearance. FMF also offers application-specific pipe designs, including Gnarly torque pipes for increased low-end performance and Factory Rev pipes for stronger midrange and top-end power. This product is the Fatty configuration, intended to provide broad power gains rather than focusing exclusively on one area of the powerband.
Feature: All-around power increase across the engine’s usable power range.
Feature: Electro-nickel-plated finish helps resist chipping and discoloration.
Feature: FMF Fatty design provides balanced performance for varied riding conditions.
Feature: Direct-fit replacement for compatible KTM and Husqvarna 50cc models.
Manufactured by FMF and identified by manufacturer and vendor part number 025150, this pipe fits the 2009–2017 KTM 50 SX and the 2017 Husqvarna TC 50 listed below. Verify the motorcycle model year and exhaust configuration before installation. FMF part number 025150 corresponds to the Fatty KTM 50 SX application and is supplied for riders seeking improved performance from a compatible two-stroke engine.
Features:
- All-around power increase across the engine’s usable power range
- Electro-nickel-plated finish helps resist chipping and discoloration
- FMF Fatty design provides balanced performance for varied riding conditions
- Direct-fit replacement for compatible KTM and Husqvarna 50cc models
- Fits 2009–2017 KTM 50 SX and 2017 Husqvarna TC 50
Fitment:
2009 KTM 50 SX
2010 KTM 50 SX
2011 KTM 50 SX
2012 KTM 50 SX
2013 KTM 50 SX
2014 KTM 50 SX
2015 KTM 50 SX
2016 KTM 50 SX
2017 Husqvarna TC 50
2017 KTM 50 SX
2018 Husqvarna TC 50
2018 KTM 50 SX
2019 Husqvarna TC 50
2019 KTM 50 SX
2020 Husqvarna TC 50
2020 KTM 50 SX
2021 Gas-Gas MC 50
2021 Husqvarna TC 50
2021 KTM 50 SX
2022 Gas-Gas MC 50
2022 Husqvarna TC 50
2022 KTM 50 SX
2023 Gas-Gas MC 50
2023 Husqvarna TC 50
2023 KTM 50 SX
2024 Gas-Gas MC 50