The FMF 045633 Factory 4.1 RCT slip-on exhaust is a high-performance replacement exhaust designed for select KTM, Husqvarna, and GasGas 250F motocross and off-road motorcycles. This anodized titanium FMF exhaust features a titanium canister and mid-pipe, along with a carbon fiber end cap for a lightweight, durable installation. The tuned exhaust system is engineered with application-specific core specifications to help deliver strong power output while refining exhaust pressure and reducing sound levels.
FMF’s patented Resonance Chamber Technology uses an advanced core, canister, and chamber design to increase internal volume for sound-absorbing material while maintaining performance. Factory Forward Engineering centralizes mass to help reduce the likelihood of crash damage, making this exhaust well suited to demanding track and trail environments. The innovative rear end cap allows simple installation of tuning tip inserts or a spark arrestor, and a spark arrestor and wash plug are included for added convenience.
This FMF Factory 4.1 RCT slip-on fits the 2019–2021 Husqvarna FC 250, 2019–2021 KTM 250 SX-F, 2021–2022 GasGas EX 250F, and 2021–2022 GasGas MC 250F. Verify motorcycle model and year before installation. Manufacturer part number 045633 and vendor part number 79-40416 identify this FMF Ano Ti F4.1 RCT S/O with Carbon Cap KTM/Hus application.
Features:
- Resonance Chamber Technology: Uses an advanced chambered design to help reduce sound while maintaining strong power output.
- Patented Core Shape: Helps lower exhaust sound levels without sacrificing performance.
- Patented Canister Shape: Increases internal volume for additional sound-absorbing material.
- Patented Chamber Design: Refines exhaust pressure for application-specific performance.
- Factory Forward Engineering: Centralizes exhaust mass and helps reduce exposure to crash damage.
- Tuned Exhaust: Uses optimized core specifications for compatible motorcycle applications.
- Titanium Construction: Includes a titanium canister and mid-pipe for a lightweight, durable design.
- Carbon Fiber End Cap: Provides a durable and performance-focused finishing component.
- Serviceable Rear End Cap: Simplifies installation of tuning tip inserts or the included spark arrestor.
- Included Accessories: Comes with a spark arrestor and wash plug.
- Fitment: Fits 2019–2021 Husqvarna FC 250, 2019–2021 KTM 250 SX-F, 2021–2022 GasGas EX 250F, and 2021–2022 GasGas MC 250F.
Fitment:
2019 Husqvarna FC 250
2019 KTM 250 SX-F
2019 KTM 250 XC-F
2020 Husqvarna FC 250
2020 KTM 250 SX-F
2020 KTM 250 XC-F
2021 Gas-Gas EX 250F
2021 Gas-Gas MC 250F
2021 Husqvarna FC 250
2021 KTM 250 SX-F
2021 KTM 250 XC-F
2022 Gas-Gas EX 250F
2022 Gas-Gas MC 250F
2022 Husqvarna FC 250
2022 KTM 250 SX-F
2022 KTM 250 XC-F
2023 Gas-Gas EX 250F
2023 Gas-Gas MC 250F