The FMF Factory Fatty Rev 024078 pipe for Yamaha YZ125X 2023-2024 is designed to concentrate power delivery at the mid and upper speeds of the power band. If you need more power, want more time...

The FMF Fatty 025263 pipe for Beta X-Trainer 2015-2022 offers race-proven performance, broadening and smoothing the power curve to increase gains throughout the power band. Whether you're an...

The FMF Fatty 025241 pipe for Gas Gas EC 250 2021-2023 offers race-proven performance, broadening and smoothing the power curve to increase gains throughout the power band. Whether you're an...

The FMF Fatty 025241 pipe for Gas Gas EC 300 2021-2023 offers race-proven performance, broadening and smoothing the power curve to increase gains throughout the power band. Whether you're an...

The FMF Fatty 025241 pipe for Gas Gas EX 250 2022 offers race-proven performance, broadening and smoothing the power curve to increase gains throughout the power band. Whether you're an...

The FMF Fatty 025241 pipe for Gas Gas EX 300 2021-2022 offers race-proven performance, broadening and smoothing the power curve to increase gains throughout the power band. Whether you're an...

The FMF Fatty 025238 pipe for Gas Gas MC 125 2021-2023 offers race-proven performance, broadening and smoothing the power curve to increase gains throughout the power band. Whether you're an...

The FMF Fatty 025241 pipe for Gas Gas MC 250 2022-2023 offers race-proven performance, broadening and smoothing the power curve to increase gains throughout the power band. Whether you're an...

The FMF Fatty 025150 pipe for Gas Gas MC50 2021-2023 offers race-proven performance, broadening and smoothing the power curve to increase gains throughout the power band. Whether you're an...

The FMF Fatty 025197 pipe for Gas Gas MC65 2021-2023 offers race-proven performance, broadening and smoothing the power curve to increase gains throughout the power band. Whether you're an...