Twin Air Standard Air Filter — Husqvarna FC 250 (2016-2018), Husqvarna FC 350

Twin Air's Standard Air Filter is the dual-stage foam filter that's been the benchmark in dirt-bike air filtration for decades. Two fused layers of open-pore foam — coarse outer, fine inner — trap airborne dust, grime, and sand while keeping airflow high. Assembled by hand and inspected for fit, with model-specific molds for 1500+ motorcycles dating back to 1965.

• Dual-stage open-cell foam — outer catches grit, inner traps fine particles
• Hand-assembled and inspected, with a greaseless sealing ring
• Washable and reusable — 30+ cleaning cycles is typical
• Model-specific fit — no universal sizes
• Drops into the OEM airbox

Fitment: bike-specific air-box fit. Drops into the OEM air-box on:

• Husqvarna FC 250 (2016-2018)
• Husqvarna FC 350 (2016-2018)
• Husqvarna FC 450 (2016-2018)
• Husqvarna FE 250 (2017-2018)
• Husqvarna FE 350 (2017-2018)
• Husqvarna FE 450 (2017-2018)
• Husqvarna FS 450 (2016-2018)
• Husqvarna FX 450 (2017-2018)
• KTM 250 EXC-F (2017-2018)
• KTM 250 SX-F (2016-2018)
• KTM 250 XC-F (2016-2018)
• KTM 250 XCF-W (2017-2018)
• KTM 350 EXC-F (2017-2018)
• KTM 350 SX-F (2016-2018)
• KTM 350 XC-F (2016-2018)
• KTM 350 XCF-W (2017-2018)
• KTM 450 EXC (2017-2018)
• KTM 450 SX-F (2016-2018)
• KTM 450 XC-F (2016-2018)
• KTM 450 XC-W (2017-2018)