The principal of how foam air filters work is simple: "Open Cell" polyurethane foam is wetted with specially developed filter oil. The "sticky" filter oil is suspended in the path of the dirty air on the strands of the web-l...

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The principal of how foam air filters work is simple: "Open Cell" polyurethane foam is wetted with specially developed filter oil. The "sticky" filter oil is suspended in the path of the dirty air on the strands of the web-like cell structure of the foam. This makes it impossible for the dirt to pass through the strands. As the outer strands become loaded with dirt particles, the wetted strands down stream start trapping dirt, allowing the entire thickness to

Fitment:
2008 Honda TRX400EX Sportrax
2007 Honda TRX400EX Sportrax
2006 Honda TRX400EX Sportrax
2005 Honda TRX400EX Sportrax
2004 Honda TRX400EX Sportrax
2003 Honda TRX400EX Sportrax
2002 Honda TRX400EX Sportrax
2001 Honda TRX400EX Sportrax
2000 Honda TRX400EX Sportrax
1999 Honda TRX400EX Sportrax
2009 Honda TRX400X
2005 Honda TRX450R
2004 Honda TRX450R

  • The principal of how foam air filters work is simple: "Open Cell" polyurethane foam is wetted with specially developed filter oil.
  • The "sticky" filter oil is suspended in the path of the dirty air on the strands of the web-like cell structure of the foam.
  • This makes it impossible for the dirt to pass through the strands.
  • As the outer strands become loaded with dirt particles, the wetted strands down stream start trapping dirt, allowing the entire thickness to be utilized.
  • This prevents surface loading or air restriction for 80% of the surface life of the air filter element. When the filter is sufficiently dirty it can be easily washed, re-oiled and re-used.
  • The principal of how foam air filters work is simple: "Open Cell" polyurethane foam is wetted with specially developed filter oil.
  • The "sticky" filter oil is suspended in the path of the dirty air on the strands of the web-like cell structure of the foam.
  • This makes it impossible for the dirt to pass through the strands.
  • As the outer strands become loaded with dirt particles, the wetted strands down stream start trapping dirt, allowing the entire thickness to be utilized.
  • This prevents surface loading or air restriction for 80% of the surface life of the air filter element. When the filter is sufficiently dirty it can be easily washed, re-oiled and re-used.

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