Features:
- The ultimate power booster featuring exclusive Ti-Metal construction
- Improved bottom to mid-range power
- Produce the low end of a longer header and the top end of a short header
- Less susceptible to damage than a long header
- Runs well with sound-restricting mufflers; effectively reduce sound output by as much as 1.5 dB
Fit the models:
| YAMAHA |
WR 250 F |
2023 |
| YAMAHA |
WR 250 F |
2022 |
| YAMAHA |
WR 250 F |
2024 |
| YAMAHA |
WR 250 F |
2020 |
| YAMAHA |
WR 250 F |
2021 |
| YAMAHA |
YZ 250 F |
2021 |
| YAMAHA |
YZ 250 F |
2019 |
| YAMAHA |
YZ 250 F |
2020 |
| YAMAHA |
YZ 250 F |
2022 |
| YAMAHA |
YZ 250 F |
2023 |
| YAMAHA |
YZ 250 F |
2024 |
| YAMAHA |
YZ 250 FX |
2025 |
| YAMAHA |
YZ 250 FX |
2024 |
| YAMAHA |
YZ 250 FX |
2020 |
| YAMAHA |
YZ 250 FX |
2021 |
| YAMAHA |
YZ 250 FX |
2022 |
| YAMAHA |
YZ 250 FX |
2023 |

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 |
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 |
WR |
2020 |
|
250 |
| YAMAHA |
WR |
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 |
WR |
2021 |
|
250 |
| YAMAHA |
WR |
2022 |
|
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 |
WR |
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 |
WR |
2024 |
|
250 |
| YAMAHA |
YZ |
2024 |
|
250 |
| YAMAHA |
YZ |
2024 |
|
250 |