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FMF Yamaha YZ250 99-25 Factory Fatty Expansion Chamber
SKU:Description
FMF RACING FACTORY FATTY EXPANSION CHAMBER
FMF Racing is a company that specializes in the production of high-performance motorcycle exhaust systems. One of their most popular products is the Factory Fatty Expansion Chamber, which is designed for off-road motorcycles. The expansion chamber is hand-made from high-quality materials and is engineered to increase horsepower and torque, while also reducing weight. The design of the chamber allows for improved exhaust flow and a more aggressive exhaust note. The Factory Fatty Expansion Chamber is a popular choice among off-road Motocross riders looking to improve the sound and performance of their dirt bike.
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.
FEATURES
- Lighter 20 gauge steel is used for the body of the pipe.
- 19 Gauge steel was used for the header portion.
- Includes O-rings on most models
- Hand-pounded seams for smooth flow transitions.
- O-Rings Included
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Bike Fitment
If your bike is listed below, this product will suit it.
Yamaha (37)
- Yamaha YZ250 1999
- Yamaha YZ250 2000
- Yamaha YZ250 2001
- Yamaha YZ250 2002
- Yamaha YZ250 2003
- Yamaha YZ250 2004
- Yamaha YZ250 2005
- Yamaha YZ250 2006
- Yamaha YZ250 2007
- Yamaha YZ250 2008
- Yamaha YZ250 2009
- Yamaha YZ250 2010
- Yamaha YZ250 2011
- Yamaha YZ250 2012
- Yamaha YZ250 2013
- Yamaha YZ250 2014
- Yamaha YZ250 2015
- Yamaha YZ250 2016
- Yamaha YZ250 2017
- Yamaha YZ250 2018
- Yamaha YZ250 2019
- Yamaha YZ250 2020
- Yamaha YZ250 2021
- Yamaha YZ250 2022
- Yamaha YZ250 2023
- Yamaha YZ250 2024
- Yamaha YZ250 2025
- Yamaha YZ250X 2016
- Yamaha YZ250X 2017
- Yamaha YZ250X 2018
- Yamaha YZ250X 2019
- Yamaha YZ250X 2020
- Yamaha YZ250X 2021
- Yamaha YZ250X 2022
- Yamaha YZ250X 2023
- Yamaha YZ250X 2024
- Yamaha YZ250X 2025
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Delivery & Returns
SHIPPING
All orders received by 2pm weekdays are dispatched the same day when purchasing in-stock items. MXexpress get priority picking to improve the speed that we get your order out.
RETURNS
If you receive any items that you are unhappy with for any reason, simply return to us within 60 days in the condition that you received them and we will happily offer a store credit or refund.
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Four payments of $139.75
In Stock - Ready to ship!