Product Details
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
Beta: RR 125 2T 2014–2018 · RR 250 2T 2013–2019 · RR 300 2T 2013–2019 · RR 350 4T 2013–2019 · RR 390 4T 2013–2019 · RR 400 4T 2013–2019 · RR 430 4T 2015–2019 · RR 450 4T 2013–2019 · RR 480 4T 2015–2019 · RR 498 4T 2013–2019 · RS 390 4T 2015–2019 · RS 430 4T 2015–2019 · RS 500 4T 2015–2019 · X-Trainer 250 2018–2022 · X-Trainer 300 2018–2022
Specifications
| Filter Type | Foam |
|---|---|
| Construction | Dual-layer, fused |
| Outer Foam | Coarse, open-pore |
| Inner Foam | Fine pore |
| Pre-Oiled | Yes |
| Filter Oil | Twin Air BIO Foam Filter Oil |
| Sealing | Greaseless flat foam sealing ring |
| Backfire Resistance | Yes |
| Best For | Off-road / Trail, MX / Motocross |
Verified from Garamoto’s catalog & fitment data.