Close Out!
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.

Pentagonal-shaped muffler
Maximized internal volume
Polyresonant duplex front chamber
Stepped, two-stage core baffle
Spark Arrestor/Sound Insert Compatible

Fitment
2019 Husqvarna FX 350
2019 Husqvarna FC 250
2019 Husqvarna FC 350
2019 KTM 350 SX-F
2019 KTM 250 SX-F
2019 KTM 350 XC-F
2019 KTM 250 XC-F
2020 Husqvarna FC 250
2020 Husqvarna FC 350
2020 Husqvarna FX 350
2020 KTM 250 SX-F
2020 KTM 350 SX-F
2020 KTM 250 XC-F
2020 KTM 350 XC-F
2021 KTM 250 SX-F
2021 KTM 350 SX-F
2021 KTM 250 XC-F
2021 KTM 350 XC-F
2021 Husqvarna FC 250
2021 Husqvarna FC 350
2021 Husqvarna FX 350
2021 Gas-Gas MC 250F
2021 Gas-Gas EX 250F
2021 Gas-Gas EX 350F
2022 Gas-Gas EX 250F
2022 Gas-Gas EX 350F
2022 Gas-Gas MC 250F
2022 Gas-Gas MC 350F
2022 Husqvarna FC 250
2022 Husqvarna FC 350
2022 Husqvarna FX 350
2022 KTM 250 XC-F
2022 KTM 350 XC-F
2022 KTM 250 SX-F
2022 KTM 350 SX-F
2023 Gas-Gas MC 250F
2023 Gas-Gas MC 350F
2023 Gas-Gas EX 250F
2023 Gas-Gas EX 350F