Features:
- Overall increase in power and torque
- Durable stainless steel and aluminum construction
- Space Age internal packing material for maximum longevity
- Internal shape of core uses Hi-Flo technology
- Enhanced sonic evacuation provides for higher flow and increased power
- Includes removable spark arrestor
- NOTE: Will not pass 2025 FIM sound regulation
Fit the models:
| GAS GAS |
EX 250 F |
2021 |
| GAS GAS |
EX 250 F |
2022 |
| GAS GAS |
EX 250 F |
2023 |
| GAS GAS |
EX 350 F |
2022 |
| GAS GAS |
EX 350 F |
2021 |
| GAS GAS |
EX 350 F |
2023 |
| GAS GAS |
EX 450 F |
2023 |
| GAS GAS |
EX 450 F |
2021 |
| GAS GAS |
EX 450 F |
2022 |
| GAS GAS |
MC 250 F |
2023 |
| GAS GAS |
MC 250 F |
2022 |
| GAS GAS |
MC 250 F |
2021 |
| GAS GAS |
MC 350 F |
2023 |
| GAS GAS |
MC 350 F |
2022 |
| GAS GAS |
MC 450 F |
2022 |
| GAS GAS |
MC 450 F |
2023 |
| GAS GAS |
MC 450 F |
2021 |
| HUSQVARNA |
FC 250 |
2022 |
| HUSQVARNA |
FC 250 |
2021 |
| HUSQVARNA |
FC 250 |
2019 |
| HUSQVARNA |
FC 250 |
2020 |
| HUSQVARNA |
FC 350 |
2020 |
| HUSQVARNA |
FC 350 |
2019 |
| HUSQVARNA |
FC 350 |
2021 |
| HUSQVARNA |
FC 350 |
2022 |
| HUSQVARNA |
FC 450 |
2022 |
| HUSQVARNA |
FC 450 |
2019 |
| HUSQVARNA |
FC 450 |
2021 |
| HUSQVARNA |
FC 450 |
2020 |
| HUSQVARNA |
FX 350 |
2020 |
| HUSQVARNA |
FX 350 |
2019 |
| HUSQVARNA |
FX 350 |
2022 |
| HUSQVARNA |
FX 350 |
2021 |
| HUSQVARNA |
FX 450 |
2021 |
| HUSQVARNA |
FX 450 |
2022 |
| HUSQVARNA |
FX 450 |
2020 |
| HUSQVARNA |
FX 450 |
2019 |
| KTM |
SX-F 250 |
2019 |
| KTM |
SX-F 250 |
2020 |
| KTM |
SX-F 250 |
2022 |
| KTM |
SX-F 250 |
2021 |
| KTM |
SX-F 350 |
2021 |
| KTM |
SX-F 350 |
2022 |
| KTM |
SX-F 350 |
2020 |
| KTM |
SX-F 350 |
2019 |
| KTM |
SX-F 450 |
2020 |
| KTM |
SX-F 450 |
2019 |
| KTM |
SX-F 450 |
2022 |
| KTM |
SX-F 450 |
2021 |
| KTM |
SX-F 450 |
2018 |
| KTM |
XC-F 250 I |
2021 |
| KTM |
XC-F 250 I |
2022 |
| KTM |
XC-F 250 I |
2020 |
| KTM |
XC-F 250 I |
2019 |
| KTM |
XC-F 350 I |
2020 |
| KTM |
XC-F 350 I |
2019 |
| KTM |
XC-F 350 I |
2022 |
| KTM |
XC-F 350 I |
2021 |
| KTM |
XC-F 450 I |
2022 |
| KTM |
XC-F 450 I |
2020 |
| KTM |
XC-F 450 I |
2019 |
| KTM |
XC-F 450 I |
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 |
| KTM |
SX-F |
2018 |
|
450 |
| KTM |
SX-F |
2019 |
|
250 |
| KTM |
SX-F |
2019 |
|
350 |
| KTM |
SX-F |
2018 |
Factory Edition |
450 |
| KTM |
SX-F |
2019 |
|
450 |
| HUSQVARNA |
FC |
2019 |
|
250 |
| HUSQVARNA |
FC |
2019 |
|
350 |
| HUSQVARNA |
FC |
2019 |
|
450 |
| HUSQVARNA |
FX |
2019 |
|
350 |
| HUSQVARNA |
FX |
2019 |
|
450 |
| KTM |
XC-F |
2019 |
|
350 |
| HUSQVARNA |
FC |
2020 |
|
250 |
| HUSQVARNA |
FC |
2020 |
|
350 |
| HUSQVARNA |
FC |
2020 |
|
450 |
| HUSQVARNA |
FC |
2019 |
Rockstar Edition |
450 |
| KTM |
SX-F |
2020 |
|
250 |
| KTM |
SX-F |
2020 |
|
450 |
| KTM |
SX-F |
2020 |
|
350 |
| HUSQVARNA |
FX |
2020 |
|
450 |
| HUSQVARNA |
FX |
2020 |
|
350 |
| KTM |
XC-F |
2020 |
|
450 |
| KTM |
XC-F |
2020 |
|
350 |
| KTM |
XC-F |
2020 |
|
250 |
| KTM |
XC-F |
2019 |
|
250 |
| KTM |
XC-F |
2019 |
|
450 |
| KTM |
SX-F |
2019 |
Factory Edition |
450 |
| KTM |
SX-F |
2019 |
Herlings Replica |
450 |
| KTM |
SX-F |
2020 |
Prado |
250 |
| KTM |
SX-F |
2020 |
Cairoli |
450 |
| HUSQVARNA |
FC |
2020 |
Rockstar Edition |
450 |
| KTM |
SX-F |
2020 |
Factory Edition |
450 |
| KTM |
EXC-F |
2021 |
|
250 |
| KTM |
EXC-F |
2021 |
Sixdays |
250 |
| KTM |
EXC-F |
2021 |
|
350 |
| KTM |
EXC-F |
2021 |
Sixdays |
350 |
| KTM |
EXC-F |
2021 |
|
450 |
| KTM |
EXC-F |
2021 |
Sixdays |
450 |
| KTM |
EXC |
2021 |
|
250 |
| KTM |
EXC |
2021 |
Sixdays |
250 |
| KTM |
SX-F |
2021 |
|
250 |
| KTM |
SX-F |
2021 |
|
350 |
| KTM |
SX-F |
2021 |
|
450 |
| KTM |
XC-F |
2021 |
|
250 |
| KTM |
XC-F |
2021 |
|
350 |
| KTM |
XC-F |
2021 |
|
450 |
| HUSQVARNA |
FC |
2021 |
|
250 |
| HUSQVARNA |
FC |
2021 |
|
350 |
| HUSQVARNA |
FC |
2021 |
|
450 |
| HUSQVARNA |
FX |
2021 |
|
350 |
| HUSQVARNA |
FX |
2021 |
|
450 |
| GAS GAS |
EX |
2021 |
|
250 |
| GAS GAS |
EX |
2021 |
|
350 |
| GAS GAS |
EX |
2021 |
|
450 |
| GAS GAS |
MC |
2021 |
|
250 |
| GAS GAS |
MC |
2021 |
|
450 |
| KTM |
EXC-F |
2021 |
WESS |
350 |
| KTM |
XC-F |
2021 |
Kailub Russel |
350 |
| KTM |
SX-F |
2022 |
|
450 |
| KTM |
SX-F |
2022 |
|
350 |
| KTM |
SX-F |
2022 |
|
250 |
| KTM |
EXC-F |
2022 |
|
250 |
| KTM |
EXC-F |
2022 |
Sixdays |
250 |
| KTM |
EXC-F |
2022 |
|
350 |
| KTM |
EXC-F |
2022 |
Sixdays |
350 |
| KTM |
EXC-F |
2022 |
|
450 |
| KTM |
EXC-F |
2022 |
Sixdays |
450 |
| KTM |
EXC |
2022 |
|
250 |
| KTM |
EXC |
2022 |
Sixdays |
250 |
| KTM |
XC-F |
2022 |
|
250 |
| KTM |
XC-F |
2022 |
|
350 |
| KTM |
XC-F |
2022 |
|
450 |
| HUSQVARNA |
FC |
2022 |
|
250 |
| HUSQVARNA |
FC |
2022 |
|
350 |
| HUSQVARNA |
FC |
2022 |
|
450 |
| HUSQVARNA |
FX |
2022 |
|
350 |
| HUSQVARNA |
FX |
2022 |
|
450 |
| GAS GAS |
MC |
2022 |
|
250 |
| GAS GAS |
MC |
2022 |
|
250 |
| GAS GAS |
MC |
2022 |
|
350 |
| KTM |
EXC-F |
2022 |
Factory Edition |
350 |
| KTM |
SX-F |
2022 |
Factory Edition |
450 |
| KTM |
SX-F |
2022 |
Factory Edition |
250 |
| KTM |
XC-F |
2022 |
Factory Edition |
350 |
| HUSQVARNA |
FC |
2022 |
Rockstar Edition |
250 |
| HUSQVARNA |
FC |
2022 |
Rockstar Edition |
450 |
| GAS GAS |
MC |
2022 |
|
450 |
| GAS GAS |
EX |
2021 |
|
250 |
| GAS GAS |
EX |
2022 |
|
250 |
| GAS GAS |
EX |
2022 |
|
250 |
| GAS GAS |
EX |
2022 |
|
350 |
| GAS GAS |
EX |
2022 |
|
450 |
| GAS GAS |
MC |
2022 |
Troy Lee |
450 |
| GAS GAS |
MC |
2023 |
|
250 |
| GAS GAS |
MC |
2023 |
|
250 |
| GAS GAS |
MC |
2023 |
|
350 |
| GAS GAS |
MC |
2023 |
|
450 |
| GAS GAS |
EX |
2023 |
|
250 |
| GAS GAS |
EX |
2023 |
|
250 |
| GAS GAS |
EX |
2023 |
|
350 |
| GAS GAS |
EX |
2023 |
|
450 |
| KTM |
EXC-F |
2023 |
|
450 |
| KTM |
EXC-F |
2023 |
Sixdays |
450 |
| KTM |
EXC-F |
2023 |
|
350 |
| KTM |
EXC-F |
2023 |
Sixdays |
350 |
| KTM |
EXC-F |
2023 |
|
250 |
| KTM |
EXC-F |
2023 |
Sixdays |
250 |
| KTM |
EXC |
2023 |
|
250 |
| KTM |
EXC |
2023 |
Sixdays |
250 |