Features:
- The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams and it shares many of the same characteristics with its craftsmanship and material quality
- Broadens and smooths 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
- Lighter 20 gauge steel used for the body of the pipe
- 19 Gauge steel used for the header portion
- Hand pounded seams for smooth flow transitions
- NOTE: Will not pass 2025 FIM sound regulation
Fit the models:
| YAMAHA |
YZ 250 |
2019 |
| YAMAHA |
YZ 250 |
2020 |
| YAMAHA |
YZ 250 |
2021 |
| YAMAHA |
YZ 250 |
2022 |
| YAMAHA |
YZ 250 |
2023 |
| YAMAHA |
YZ 250 |
2024 |
| YAMAHA |
YZ 250 |
2006 |
| YAMAHA |
YZ 250 |
2007 |
| YAMAHA |
YZ 250 |
2008 |
| YAMAHA |
YZ 250 |
2010 |
| YAMAHA |
YZ 250 |
2009 |
| YAMAHA |
YZ 250 |
2011 |
| YAMAHA |
YZ 250 |
2012 |
| YAMAHA |
YZ 250 |
2005 |
| YAMAHA |
YZ 250 |
2013 |
| YAMAHA |
YZ 250 |
2014 |
| YAMAHA |
YZ 250 |
2015 |
| YAMAHA |
YZ 250 |
2016 |
| YAMAHA |
YZ 250 |
2017 |
| YAMAHA |
YZ 250 |
1999 |
| YAMAHA |
YZ 250 |
2000 |
| YAMAHA |
YZ 250 |
2001 |
| YAMAHA |
YZ 250 |
2002 |
| YAMAHA |
YZ 250 |
2003 |
| YAMAHA |
YZ 250 |
2004 |
| YAMAHA |
YZ 250 |
2018 |

FMF - Flying Machine Factory - 1973 was founded by a twenty-two-year-old named Donny Emler, a typical Southern Californian who, like everyone else in the 1970s, found a passion for riding and racing dirt bikes. FMF is now one of the most recognizable logos in motocross. The main area of FMF is the highest quality exhaust systems for dirt bikes.
| Brand |
Model |
Year |
Name |
CC |
| YAMAHA |
YZ |
1999 |
|
250 |
| YAMAHA |
YZ |
2000 |
|
250 |
| YAMAHA |
YZ |
2001 |
|
250 |
| YAMAHA |
YZ |
2001 |
|
250 |
| YAMAHA |
YZ |
2002 |
|
250 |
| YAMAHA |
YZ |
2003 |
|
250 |
| YAMAHA |
YZ |
2002 |
|
250 |
| YAMAHA |
YZ |
2003 |
|
250 |
| YAMAHA |
YZ |
2004 |
|
250 |
| YAMAHA |
YZ |
2004 |
|
250 |
| YAMAHA |
YZ |
2005 |
|
250 |
| YAMAHA |
YZ |
2005 |
|
250 |
| YAMAHA |
YZ |
2006 |
|
250 |
| YAMAHA |
YZ |
2006 |
|
250 |
| YAMAHA |
YZ |
2007 |
|
250 |
| YAMAHA |
YZ |
2007 |
|
250 |
| YAMAHA |
YZ |
2008 |
|
250 |
| YAMAHA |
YZ |
2008 |
|
250 |
| YAMAHA |
YZ |
2009 |
|
250 |
| YAMAHA |
YZ |
2010 |
|
250 |
| YAMAHA |
YZ |
2009 |
|
250 |
| YAMAHA |
YZ |
2010 |
|
250 |
| YAMAHA |
YZ |
2006 |
50th Anniversary Limited Edition |
250 |
| YAMAHA |
YZ |
2011 |
|
250 |
| YAMAHA |
YZ |
2011 |
|
250 |
| YAMAHA |
YZ |
2011 |
|
250 |
| YAMAHA |
YZ |
2012 |
|
250 |
| YAMAHA |
YZ |
2012 |
|
250 |
| YAMAHA |
YZ |
2012 |
|
250 |
| YAMAHA |
YZ |
2006 |
|
250 |
| YAMAHA |
YZ |
2009 |
|
250 |
| YAMAHA |
YZ |
2010 |
|
250 |
| YAMAHA |
YZ |
2011 |
|
250 |
| YAMAHA |
YZ |
2007 |
|
250 |
| YAMAHA |
YZ |
2008 |
|
250 |
| YAMAHA |
YZ |
2013 |
|
250 |
| YAMAHA |
YZ |
1999 |
|
250 |
| YAMAHA |
YZ |
2000 |
|
250 |
| YAMAHA |
YZ |
2001 |
|
250 |
| YAMAHA |
YZ |
2002 |
|
250 |
| YAMAHA |
YZ |
2003 |
|
250 |
| YAMAHA |
YZ |
2004 |
|
250 |
| YAMAHA |
YZ |
2005 |
|
250 |
| YAMAHA |
YZ |
2006 |
50th Anniversary Limited Edition |
250 |
| YAMAHA |
YZ |
2001 |
|
250 |
| YAMAHA |
YZ |
2002 |
|
250 |
| YAMAHA |
YZ |
2003 |
|
250 |
| YAMAHA |
YZ |
2004 |
|
250 |
| YAMAHA |
YZ |
2005 |
|
250 |
| YAMAHA |
YZ |
2006 |
|
250 |
| YAMAHA |
YZ |
2007 |
|
250 |
| YAMAHA |
YZ |
2008 |
|
250 |
| YAMAHA |
YZ |
2009 |
|
250 |
| YAMAHA |
YZ |
2010 |
|
250 |
| YAMAHA |
YZ |
2012 |
|
250 |
| YAMAHA |
YZ |
2013 |
|
250 |
| YAMAHA |
YZ |
2013 |
|
250 |
| YAMAHA |
YZ |
2013 |
|
250 |
| YAMAHA |
YZ |
2014 |
|
250 |
| YAMAHA |
YZ |
2014 |
|
250 |
| YAMAHA |
YZ |
2014 |
|
250 |
| YAMAHA |
YZ |
2014 |
|
250 |
| YAMAHA |
YZ |
2015 |
|
250 |
| YAMAHA |
YZ |
2015 |
|
250 |
| YAMAHA |
YZ |
2015 |
|
250 |
| YAMAHA |
YZ |
2015 |
|
250 |
| YAMAHA |
YZ |
2016 |
|
250 |
| YAMAHA |
YZ |
2016 |
|
250 |
| YAMAHA |
YZ |
2016 |
|
250 |
| YAMAHA |
YZ |
2016 |
|
250 |
| YAMAHA |
YZ |
2016 |
|
250 |
| YAMAHA |
YZ |
2016 |
60th Anniversary |
250 |
| YAMAHA |
YZ |
2015 |
|
250 |
| YAMAHA |
YZ |
2016 |
|
250 |
| YAMAHA |
YZ |
2017 |
|
250 |
| YAMAHA |
YZ |
2017 |
|
250 |
| YAMAHA |
YZ |
2017 |
|
250 |
| YAMAHA |
YZ |
2017 |
|
250 |
| YAMAHA |
YZ |
2017 |
|
250 |
| YAMAHA |
YZ |
2017 |
|
250 |
| YAMAHA |
YZ |
2018 |
|
250 |
| YAMAHA |
YZ |
2018 |
|
250 |
| YAMAHA |
YZ |
2018 |
|
250 |
| YAMAHA |
YZ |
2018 |
|
250 |
| YAMAHA |
YZ |
2018 |
|
250 |
| YAMAHA |
YZ |
2019 |
|
250 |
| YAMAHA |
YZ |
2019 |
|
250 |
| YAMAHA |
YZ |
2019 |
|
250 |
| YAMAHA |
YZ |
2019 |
|
250 |
| YAMAHA |
YZ |
2020 |
|
250 |
| YAMAHA |
YZ |
2020 |
|
250 |
| YAMAHA |
YZ |
2020 |
|
250 |
| YAMAHA |
YZ |
2020 |
|
250 |
| YAMAHA |
YZ |
2021 |
|
250 |
| YAMAHA |
YZ |
2021 |
|
250 |
| YAMAHA |
YZ |
2021 |
|
250 |
| YAMAHA |
YZ |
2021 |
|
250 |
| YAMAHA |
YZ |
2021 |
Monster Energy Racing Edition |
250 |
| YAMAHA |
YZ |
2022 |
|
250 |
| YAMAHA |
YZ |
2022 |
Monster Energy Racing Edition |
250 |
| YAMAHA |
YZ |
2022 |
|
250 |
| YAMAHA |
YZ |
2022 |
Monster Energy Racing Edition |
250 |
| YAMAHA |
YZ |
2022 |
|
250 |
| YAMAHA |
YZ |
2022 |
|
250 |
| YAMAHA |
YZ |
2023 |
Monster Energy Racing Edition |
250 |
| YAMAHA |
YZ |
2023 |
|
250 |
| YAMAHA |
YZ |
2023 |
Monster Energy Racing Edition |
250 |
| YAMAHA |
YZ |
2023 |
|
250 |
| YAMAHA |
YZ |
2023 |
|
250 |
| YAMAHA |
YZ |
2023 |
|
250 |
| YAMAHA |
YZ |
2024 |
50th Anniversary Edition |
250 |
| YAMAHA |
YZ |
2024 |
|
250 |
| YAMAHA |
YZ |
2024 |
|
250 |
| YAMAHA |
YZ |
2024 |
50th Anniversary Edition |
250 |
| YAMAHA |
YZ |
2024 |
|
250 |
| YAMAHA |
YZ |
2024 |
|
250 |