Features:
- The straight through design of the spark arrestor canister and the performance flow stainless steel end cap ensures strength, durability and most importantly, track and trail proven unrestricted power
- The 2.1 utilizes a shape inspired by the 4.1 system
- Utilizes exclusive FMF "Turbine Dampening System"
- U.S. Forest Service legal status
- NOTE: Will not pass 2025 FIM sound regulation
Fit the models:
| GAS GAS |
EC 250 |
2018 |
| GAS GAS |
EC 250 |
2019 |
| GAS GAS |
EC 250 E4 |
2018 |
| GAS GAS |
EC 250 E4 |
2019 |
| GAS GAS |
EC 300 |
2019 |
| GAS GAS |
EC 300 |
2018 |
| GAS GAS |
EC 300 E4 |
2018 |
| GAS GAS |
EC 300 E4 |
2019 |
| GAS GAS |
EC 300 RANGER |
2019 |
| GAS GAS |
EC 300 RANGER E4 |
2019 |
| GAS GAS |
XC 250 |
2018 |
| GAS GAS |
XC 250 |
2019 |
| GAS GAS |
XC 300 |
2018 |
| GAS GAS |
XC 300 |
2019 |
| RIEJU |
MR 250 |
2021 |
| RIEJU |
MR 250 |
2022 |
| RIEJU |
MR 250 |
2023 |
| RIEJU |
MR 300 |
2022 |
| RIEJU |
MR 300 |
2023 |
| RIEJU |
MR 300 |
2021 |

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 |
| GAS GAS |
XC |
2018 |
|
250 |
| GAS GAS |
XC |
2018 |
|
300 |
| GAS GAS |
EC |
2018 |
|
250 |
| GAS GAS |
EC |
2018 |
|
300 |
| GAS GAS |
EC |
2018 |
|
250 |
| GAS GAS |
EC |
2018 |
|
300 |
| GAS GAS |
EC |
2019 |
|
250 |
| GAS GAS |
EC |
2019 |
|
250 |
| GAS GAS |
EC |
2019 |
|
300 |
| GAS GAS |
EC |
2019 |
|
300 |
| GAS GAS |
XC |
2019 |
|
250 |
| GAS GAS |
XC |
2019 |
|
300 |
| GAS GAS |
EC |
2019 |
|
300 |
| GAS GAS |
EC |
2019 |
|
300 |
| GAS GAS |
EC |
2019 |
Six Days Chile |
250 |
| GAS GAS |
EC |
2019 |
Six Days Chile |
300 |
| RIEJU |
MR |
2021 |
Pro |
250 |
| RIEJU |
MR |
2022 |
Pro |
250 |
| RIEJU |
MR |
2021 |
Pro |
300 |
| RIEJU |
MR |
2022 |
Pro |
300 |
| RIEJU |
MR |
2021 |
Racing |
250 |
| RIEJU |
MR |
2022 |
Racing |
250 |
| RIEJU |
MR |
2021 |
Racing |
300 |
| RIEJU |
MR |
2022 |
Racing |
300 |
| RIEJU |
MR |
2021 |
Ranger |
300 |
| RIEJU |
MR |
2022 |
Ranger |
300 |
| RIEJU |
MR |
2022 |
Six Days Italy |
300 |
| RIEJU |
MR |
2023 |
Pro |
250 |
| RIEJU |
MR |
2023 |
Pro |
300 |
| RIEJU |
MR |
2023 |
Racing |
250 |
| RIEJU |
MR |
2023 |
Racing |
300 |
| RIEJU |
MR |
2023 |
Ranger |
300 |
| RIEJU |
MR |
2023 |
Six Days France |
300 |