Upgrade your off-road motorcycle with the FMF Factory 4.1 RCT slip-on exhaust, manufacturer part number 045628. Designed for select KTM and Husqvarna models, this aluminum exhaust system uses FMF Resonance Chamber Technology to help reduce sound levels while maintaining strong power output. Its tuned internal core and chamber design are optimized for the specific application, helping refine exhaust pressure and deliver consistent performance.
The FMF Factory 4.1 RCT features an aluminum canister, stainless steel mid-pipe, and carbon fiber rear cap. Factory Forward Engineering centralizes mass for improved handling and helps reduce the likelihood of crash damage. The innovative rear end cap allows simple installation of tuning tip inserts or a spark arrestor, while the included spark arrestor supports approved off-road use and the wash plug helps protect the exhaust during cleaning.
Fitment includes the 2018 Husqvarna FC 450 Rockstar Edition; 2019 Husqvarna FX 350, FX 450, FC 350, and FC 450; 2019 KTM 450 SX-F, 350 SX-F, 450 XC-F, and 350 XC-F; and the 2020 Husqvarna FC 350. Verify motorcycle model and year before installation. This FMF aluminum RCT slip-on exhaust is supplied as a performance-focused replacement for compatible KTM and Husqvarna applications.
Features:
- Resonance Chamber Technology helps lower sound levels while maintaining maximum power output
- Patented core shape refines exhaust performance and sound control
- Patented canister shape provides increased internal volume for additional sound-absorbing material
- Patented chamber design enhances and refines exhaust pressure
- Factory Forward Engineering centralizes mass and helps reduce crash damage
- Application-specific tuned exhaust with optimized core specifications
- Innovative rear end cap supports simple installation of tuning tip inserts or a spark arrestor
- Aluminum canister with stainless steel mid-pipe and carbon fiber rear cap
- Includes spark arrestor and wash plug
- Fits select 2018–2020 KTM and Husqvarna motocross and cross-country motorcycles
Fitment:
2018 Husqvarna FC 450 Rockstar Edition
2018 KTM 350 SX-F
2018 KTM 350 XC-F
2018 KTM 450 SX-F
2018 KTM 450 SX-F Factory Edition
2018 KTM 450 XC-F
2019 Husqvarna FC 350
2019 Husqvarna FC 450
2019 Husqvarna FX 350
2019 Husqvarna FX 450
2019 KTM 350 SX-F
2019 KTM 350 XC-F
2019 KTM 450 SX-F
2019 KTM 450 XC-F
2020 Husqvarna FC 350
2020 Husqvarna FC 450
2020 Husqvarna FX 350
2020 Husqvarna FX 450
2020 KTM 350 SX-F
2020 KTM 350 XC-F
2020 KTM 450 SX-F
2020 KTM 450 XC-F
2021 Gas-Gas EX 350F
2021 Gas-Gas EX 450F
2021 Gas-Gas MC 450F
2021 Husqvarna FC 350
2021 Husqvarna FC 450
2021 Husqvarna FX 350
2021 Husqvarna FX 450
2021 KTM 350 SX-F
2021 KTM 350 XC-F
2021 KTM 450 SX-F
2021 KTM 450 XC-F
2022 Gas-Gas EX 350F
2022 Gas-Gas EX 450F
2022 Gas-Gas MC 350F
2022 Gas-Gas MC 450F
2022 Husqvarna FC 350
2022 Husqvarna FC 450
2022 Husqvarna FX 350
2022 Husqvarna FX 450
2022 KTM 350 SX-F
2022 KTM 350 XC-F
2022 KTM 450 SX-F
2022 KTM 450 XC-F
2023 Gas-Gas EX 350F
2023 Gas-Gas EX 450F
2023 Gas-Gas MC 350F
2023 Gas-Gas MC 450F