The RFX Air Filter, manufactured by Multi Air, provides reliable air filtration and precise fitment for select KTM, Husqvarna, and GasGas off-road motorcycles. Designed for riders of all experience levels, this replacement filter helps protect the engine from dirt and debris while supporting consistent airflow. The twin-layer foam construction offers dependable filtration for motocross, trail, and recreational riding applications.
Built with quality materials and backed by more than 30 years of Multi Air experience, the RFX filter is engineered for durability and repeatable performance. Nonflammable foam is used on applicable four-stroke models, providing an added level of protection during maintenance and riding. This product is identified by RFX part number FXAF 50003 55NO and is designed as a direct-fit replacement for the listed applications.
Fitment: Fits 2018–2021 KTM 85 SX models with 17/14 wheels; 2018–2020 Husqvarna TC 85 models with 17/14 wheels; 2019–2020 Husqvarna TC 85 models with 19/16 wheels; and select GasGas models where the original filter specification matches. Verify the motorcycle year, model, wheel configuration, and existing filter before installation.
Features:
- Brand: RFX
- Manufacturer: Multi Air
- Part Number: FXAF 50003 55NO
- Application: Replacement motorcycle air filter for select KTM, Husqvarna, and GasGas models
- Construction: Breathable twin-layered foam
- Material: Nonflammable foam used on applicable four-stroke models
- Fitment: Designed for precise fitment on listed KTM 85 SX and Husqvarna TC 85 applications
Fitment:
2018 Husqvarna TC 85 (17/14)
2018 KTM 85 SX (17/14)
2019 Husqvarna TC 85 (17/14)
2019 Husqvarna TC 85 (19/16)
2019 KTM 85 SX (17/14)
2020 Husqvarna TC 85 (17/14)
2020 Husqvarna TC 85 (19/16)
2020 KTM 85 SX (17/14)
2021 Husqvarna TC 85 (17/14)
2021 Husqvarna TC 85 (19/16)
2021 KTM 85 SX (17/14)
2022 Husqvarna TC 85 (17/14)
2022 Husqvarna TC 85 (19/16)
2022 KTM 85 SX (17/14)
2023 Gas-Gas MC 85 17/14
2023 Husqvarna TC 85 (17/14)
2023 Husqvarna TC 85 (19/16)
2023 KTM 85 SX (17/14)
2024 Gas-Gas MC 85 17/14
2024 Husqvarna TC 85 (17/14)
2024 Husqvarna TC 85 (19/16)
2024 KTM 85 SX (17/14)
2025 Gas-Gas MC 85 17/14
2025 Husqvarna TC 85 (17/14)
2025 Husqvarna TC 85 (19/16)
2025 KTM 85 SX (17/14)
2026 Gas-Gas MC 85 17/14
2026 Husqvarna TC 85 (17/14)
2026 Husqvarna TC 85 (19/16)
2026 KTM 85 SX (17/14)