The FMF Factory Fatty Pipe is designed to deliver an all-around power increase throughout the power range of compatible Yamaha YZ125 two-stroke motorcycles. Built for riders seeking responsive performance across the engine’s operating range, this expansion chamber is suited to motocross and off-road applications where strong, usable power is important. The product is identified by FMF manufacturer part number 024052 and vendor part number 78-1382F.
Fitment: Fits 2005–2014 Yamaha YZ125 models, including 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, and 2014 model years. Confirm motorcycle year and model compatibility before installation. The Factory Fatty design is intended as a performance replacement for the original exhaust pipe and should be installed using appropriate exhaust components and hardware.
All pipes are electro-nickel plated for a durable, non-chip finish designed to resist discoloration during normal use. The Factory pipe is an exception, featuring hand-pounded welds and no coating for an appearance modeled after FMF works bikes. This FMF Factory Fatty Pipe combines performance-focused construction with a finish appropriate for demanding riding conditions.
Features:
- Power Increase: Designed to provide an all-around increase throughout the power range.
- Electro-Nickel Plating: Provides a durable, non-chip finish that helps resist discoloration.
- Factory-Style Construction: Features hand-pounded welds and an uncoated finish modeled after FMF works bikes.
- Fitment: Compatible with 2005–2014 Yamaha YZ125 motorcycles.
- Identification: FMF manufacturer part number 024052 and vendor part number 78-1382F.
Fitment:
2005 Yamaha YZ125
2006 Yamaha YZ125
2007 Yamaha YZ125
2008 Yamaha YZ125
2009 Yamaha YZ125
2010 Yamaha YZ125
2011 Yamaha YZ125
2012 Yamaha YZ125
2013 Yamaha YZ125
2014 Yamaha YZ125
2015 Yamaha YZ125
2016 Yamaha YZ125
2017 Yamaha YZ125
2018 Yamaha YZ125
2019 Yamaha YZ125
2020 Yamaha YZ125
2020 Yamaha YZ125X
2021 Yamaha YZ125
2021 Yamaha YZ125X
2022 Yamaha YZ125X