Product Description
Twin Air dual-stage foam air filters for Beta RR two- and four-strokes, RS, RX and X-Trainer, 2013–2026. Pick your bike from the Fitment dropdown and Dry or Pre-Oiled from the Version dropdown, or click a part number below to select it. Each filter replaces the stock one, and you can wash, re-oil and reuse it.
- Outer foam: coarse open-pore foam catches dirt, grime and sand
- Inner foam: fine open-pore foam traps the smallest particles and keeps air flowing
- Sealing ring: thick, flat, greaseless foam that seals to the airbox
- Adhesive: holds up to repeated cleaning, even with harsh solvents
- Dry or pre-oiled: the Dry version comes unoiled, so oil it before you ride. The Pre-Oiled version is ready to install, with Twin Air oil already applied.
Clean it with Twin Air Bio Dirt Remover or Maxima Air Filter Cleaner, then oil it with Twin Air Liquid Power or Maxima FAB-1. The Maxima Air Filter Care Kit has a can of each.
Fits:
- 158089 (dry) / 158089X (pre-oiled) — Beta RR 125, 200, 250, 300 2T and RR 350, 390, 430, 480 4T 2020–2026; X-Trainer 250 and 300 2023–2025; RX 300 and RX 450 2024–2025 (replaces OEM 037.38.002.82.00)
- 158033 (dry) / 158033X (pre-oiled) — Beta RR 250 and 300 2T 2013–2019, RR 125 2T 2014–2018, RR 350, 390, 400, 450, 498 4T 2013–2019, RR 430 and 480 4T 2015–2019, RS 390, 430, 500 2015–2019; X-Trainer 250 and 300 2018–2022 (replaces OEM 031.38.022.82.00)
Other Twin Air filter listings: KTM / Husqvarna / GasGas, Honda CRF, Honda XR, Kawasaki KX, Kawasaki KLX / KLR, Yamaha YZ / WR and Suzuki.
Shipping: Ships from our partner warehouse in 1–3 business days. If you order other Warp 9 parts, this item arrives in its own box with its own tracking.
Not sure it fits? Call (801) 699-7979, Monday to Friday 8:30 to 4:30 Mountain.
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