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Twin Air Standard Air Filter — Beta 250 2T Xtrainer (2023-2025), Beta 300 2T

Part # 158089
Item #631734
Fits 12 motorcycles
  • Beta
    • 250 2T Xtrainer · 2023–2025
    • 300 2T Xtrainer · 2023–2025
    • RR 125 2T · 2020–2026
    • RR 200 2T · 2020–2026
    • RR 250 2T · 2020–2026
    • RR 300 2T · 2020–2026
    • RR 350 4T · 2020–2026
    • RR 390 4T · 2020–2026
    • RR 430 4T · 2020–2026
    • RR 480 4T · 2020–2026
    • RX 300 · 2024–2025
    • RX 450 · 2024–2025
$29.08
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Shipping calculated at checkout.
  • In stock, ready to ship
  • Backordered, shipping soon
  • Free U.S. shipping on orders $150+ ($15 flat under)
  • Ships from one of three U.S. warehouses
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WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov
Twin Air Standard Air Filter — Beta 250 2T Xtrainer (2023-2025), Beta 300 2T Xtrainer (2023-2025) + 10 more
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: bike-specific air-box fit. Drops into the OEM air-box on:

  • Beta 250 2T Xtrainer (2023-2025)
  • Beta 300 2T Xtrainer (2023-2025)
  • Beta RR 125 2T (2020-2026)
  • Beta RR 200 2T (2020-2026)
  • Beta RR 250 2T (2020-2026)
  • Beta RR 300 2T (2020-2026)
  • Beta RR 350 4T (2020-2026)
  • Beta RR 390 4T (2020-2026)
  • Beta RR 430 4T (2020-2026)
  • Beta RR 480 4T (2020-2026)
  • Beta RX 300 (2024-2025)
  • Beta RX 450 (2024-2025)

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