Twin Air
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Twin Air Standard Air Filter — Aprilia RS 50 (1999-2005)

Part # 158500FRX
Item #630720
Discontinued. The manufacturer has retired this part. We're listing whatever's still in stock at our warehouse — when it sells out, it's gone.
Fits 1 motorcycle
  • Aprilia
    • RS 50 · 1999–2005
$29.73
/
Shipping calculated at checkout.
  • Low stock - 5 items left
  • 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 — Aprilia RS 50 (1999-2005)
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:

  • Aprilia RS 50 (1999-2005)

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