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K&N Air Filter #HA-4099 fits Honda TRX400

Product Details

K&N's high-flow air filters are a direct replacement for your machine's OE air filter element. They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance, while providing excellent engine protection for your motorcycle or ATV.

  • Designed to provide increased horsepower and torque
  • Pleated media provides a large filtration area offering long service intervals
  • Multiple layers of woven cotton gauze media offers excellent filtration
  • Application specific base seal and sealing bead for a perfect fit
  • Made in the USA
  • Washable & reusable, pre-oiled and ready to ride right out of the box
  • Backed by K&N's 10-Year/Million-Mile limited warranty

Fit Guide

Model
Air Filter
Base Exterior Diameter
5.125 in.
Country of Origin
USA
Exterior Diameter
5.125 in.
Filter Media
Cotton Gauze
Filter Shape
Oval
Finish
Black Oxide
Flange Angle
0 degrees
Flange Interior Diameter
3 in.
Flange Length
1.5 in.
Height
4.5 in.
Interior Diameter
3 in.
Top Exterior Diameter
5.375 in.

Product Fitment

This item fits the following applications:

Honda TRX400EX FourTrax 400EX 1999-2008
Honda TRX400EX Sportrax 400EX 1999-2008
Honda TRX400X Sportrax 400X 2009, 2012-2014