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MSR Funnelweb Air Filter Yamaha WR250F / WR450F 2003-2015

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MSR Funnelweb Air Filter Yamaha WR250F / WR450F

The MSR Funnelweb Air Filter is for riders that ride in extremely dusty conditions, deep mud, pouring rain, hours on end. It’s for the riders that appreciate having every ounce of horsepower at the end of the ride that they had at the beginning of the ride. For those that do, what you are getting is the best air filter that you will ever need for the gnarliest of conditions.

The unique outer, pyramid shape of the single layer, single density foam creates up to 100% more surface area to trap dust. This increased surface area means you can ride twice as long without dirt on the filter, restricting your engine’s vital air supply and the horsepower it makes. Besides being better for performance the MSR FunnelWeb filter only needs to be cleaned half as often. Another place unwanted dust and dirt can sneak into your engine is the seal in the airbox. The MSR FunnelWeb filter has an injection molded urethane seal that fits more precise, has a channel that allows a bead of grease to seal even better, and won’t breakdown or warp.


  • 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
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This product is vehicle specific. Click here to select your bike to ensure fitment.

This Product Fits:

WR250F 2003-2013
WR450F 2003-2015

This item is also available for 37 other models:

CRF250R 2004-2009
CRF250X 2004-2019
CRF450R 2003-2008
CRF450X 2005-2017
FE250 2013-2014
FE350 2013-2014
FE450 2013-2014
FE501 2013-2014
FC250 2014-2015
FC350 2014-2015
FC450 2014-2015
FE250 2014-2015
FE350 2014-2015
FE350 S 2014-2015
FE450 2014-2015
FE501 2014-2015
FE501 S 2014-2015
TC125 2014-2015
TC250 2014-2015
TC85 17/14 2014-2015
TC85 19/16 2014-2015
TE125 2014-2015
TE250 2013-2015
TE300 2014-2015
125 SX 2011-2015
150 SX 2011-2015
250 SX 2011-2015
250 SX-F 2011-2015
350 EXC-F 2012-2015
350 SX-F 2011-2015
450 SX-F 2011-2015
450 SX-F Factory Edition 2012-2015
500 EXC 2012-2016
85 SX (17/14) 2013-2016
85 SX (19/16) 2013-2016
KX250F 2006-2016
KX450F 2006-2015
Product Style Item # Store SKU Manufacturer Product # Availability
Product Style MSR Funnelweb Air Filter Yamaha WR250F / WR450F 2003-2015 Item # 1123982 Store SKU Manufacturer Product # FWF497 Availability Out of Stock