MSR Funnelweb Air Filter Yamaha WR250F / WR450F 2003-2015

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MSR Funnelweb Air Filter Yamaha WR250F / WR450F

Funnelweb's profile cut foam effectively doubles the filters external surface area, without increasing the filters original size, enabling it to trap and hold far more dust on the outer surface. This means more protection for the engine while maintaining optimal air flow and extending filter service intervals.

The single layer, single density polyurethane foam has the added advantage of ease of cleaning and the ability to maintain its original shape after numerous washes. As dirt is spread over a much larger surface area, airflow restriction caused by dirt build up is minimized substantially. Overall, compared with conventional foam filters, the Funnelweb offers more protection from dirt ingestion, has longer service intervals and maintains high airflow rates when dirty.

Most Funnelweb Filter seals are constructed from injection molded urethane for a lasting, precise fit on the filter support frame and the inside of the air box. Foam seals will tend to stretch out of shape after a few washes, resulting in a poor fit to the support frame and possibly affecting the filters sealing ability.


  • Unique outer design increases overall surface area by nearly 100%
  • Protects against dust in long and grueling off road riding and racing
  • Single-layer, single-density foam prevents dust from being trapped between layers
  • Injection-molded urethane seal provides a tighter, more precise fit
  • Sold individually
  • Made in Australia
This Product Fits:
WR250F 20032013
WR450F 20032015
Product Style RevZilla Item # Manufacturer Product # Availability
MSR Funnelweb Air Filter Yamaha WR250F / WR450F 2003-2015 1123982 FWF497 In Stock: Ships next business day


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