Description
Features
- RS-4 exhaust systems illustrates the endless cycle of development. Working in conjunction with the factory teams has provided us with new ways to increase performance, lower sound levels and centralize mass. The end result is a product that gives you an unparalleled competitive advantage.
- Polyresonant duplex front chamber
- Spark Arrestor/Sound Insert Compatible
- Maximized internal volume
- Stepped, two-stage core baffle
- Pentagonal-shaped muffler
| 2023 | Gas-Gas | EX 450F |
| 2022 | Gas-Gas | EX 450F |
| 2021 | Gas-Gas | EX 450F |
| 2023 | Gas-Gas | MC 450F |
| 2022 | Gas-Gas | MC 450F |
| 2021 | Gas-Gas | MC 450F |
| 2022 | Husqvarna | FC 450 |
| 2021 | Husqvarna | FC 450 |
| 2020 | Husqvarna | FC 450 |
| 2019 | Husqvarna | FC 450 |
| 2022 | KTM | 450 SX-F |
| 2021 | KTM | 450 SX-F |
| 2020 | KTM | 450 SX-F |
| 2019 | KTM | 450 SX-F |
| 2022 | KTM | 450 XC-F |
| 2021 | KTM | 450 XC-F |
| 2020 | KTM | 450 XC-F |
| 2019 | KTM | 450 XC-F |
