Description
Features
- Maximized internal volume
- Polyresonant duplex front chamber
- Pentagonal-shaped muffler
- Stepped, two-stage core baffle
- Spark Arrestor/Sound Insert Compatible
| 2018 | Yamaha | WR450F |
| 2017 | Yamaha | WR450F |
| 2016 | Yamaha | WR450F |
| 2017 | Yamaha | YZ450F |
| 2016 | Yamaha | YZ450F |
| 2015 | Yamaha | YZ450F |
| 2014 | Yamaha | YZ450F |
| 2018 | Yamaha | YZ450FX |
| 2017 | Yamaha | YZ450FX |
| 2016 | Yamaha | YZ450FX |
