The Twin Air Air Filter, manufacturer part number 154119DR and vendor part number 715-4119DR, is designed for reliable engine air filtration and improved airflow in select KTM motocross applications. This replacement filter uses a thick, flat foam sealing ring that creates maximum contact with the airbox while functioning as a breathable gasket. Its greaseless design helps support consistent air passage without compromising the seal.
The filter features coarse open-pore foam that captures airborne dirt, grime, and sand before they reach the engine. A fine open-pore inner foam layer provides secondary filtration for smaller particles while maintaining strong airflow. Twin Air’s exclusively formulated adhesive is engineered to withstand repeated cleaning, including cleaning with harsh solvents or gasoline, helping extend service life when properly maintained.
Compared with the stock filter, this Twin Air filter is slightly smaller to increase air space and circulation around the filter. It is designed for a precise fit in the original airbox and is suitable for riders seeking dependable filtration for demanding off-road and motocross conditions. This filter fits the 2026 KTM 450 SX-F Factory Edition and 2026 KTM 250 SX-F Factory Edition.
Features:
- Thick, flat foam sealing ring provides maximum airbox contact while supporting increased air passage
- Coarse open-pore foam captures airborne dirt, grime, and sand
- Fine open-pore inner foam traps smaller particles while maintaining airflow
- Durable adhesive withstands repeated cleaning with harsh solvents or gasoline
- Slightly smaller than the stock filter to increase air space and circulation
- Direct-fit replacement for the 2026 KTM 450 SX-F Factory Edition and 2026 KTM 250 SX-F Factory Edition
Fitment:
2026 KTM 250 SX-F Factory Edition
2026 KTM 450 SX-F Factory Edition