Honda CRF450 and Honda CRF250 Gain Performance with K&N XStream Motocross Air Filters

K&N XStream Series Motocross air filter part number HA-4509XD
K&N XStream Series Motocross air filter part number HA-4509XD

2009 Honda CRF450R at K&N headquarters in Riverside, California
2009 Honda CRF450R at K&N headquarters in Riverside, California


K&N XStream Series Motocross air filter part number HA-4503XD
K&N XStream Series Motocross air filter part number HA-4503XD

K&N XStream Series Motocross Air Filter part number HA-2505XD
K&N XStream Series Motocross Air Filter part number HA-2505XD

K&N XD air filters use an extra fine weave grade cotton for added efficiency and capacity needed for extreme dusty off-road conditions. This thicker filtering medium provides increased protection while it provides the performance necessary to stay in the front of the pack. K&N XD air filters were developed for the extreme conditions encountered by race teams in the Baja 1000.

K&N XStream Series Motocross air filter, part number HA-4509XD is available for your 2009, 2010, 2011, 2012, 2013 Honda CRF450R.

The HA-4503XD is also available for your 2004, 2005, 2006, 2007, 2008 to 2009 Honda CRF250R and your 2003 through 2008 Honda CRF450R.

K&N’s HA-2505XD is designed for the 2004 to 2016 Honda CRF250X and your 2005 through 2016 Honda CRF450X.

Riders can take performance to the next level with the use of a two piece air filter designed to fit specifically into your OE air box assembly. The HA-4509XD, HA-4503XD and HA-2505XD incorporate an air filter into the filter’s top and provides a larger filtration area for high airflow and increased dirt capacity in extreme conditions.

The specially designed pleated media on each filter piece provides less restriction than typical foam air filters. Allowing your engine to breathe easier can give your Honda extra horsepower and acceleration while providing excellent filtration.

The epoxy coated aluminum wire mesh incorporated into a backfire screen, protects the filter element from harmful debris. This two-piece design makes installation and removal easier for HA-4509XD, HA-4503XD and HA-2505XD on narrow MX bikes. Pliable application specific sealing beads ensure an air tight fit against the backing plate.

No cutting or fitting is required and fuel modifications are not necessary to obtain increased performance. The HA-4509XD, HA-2505XD and the HA-4503XD are covered for one year by the K&N Limited Warranty.

Find K&N products for your vehicle using the K&N application search then use the K&N dealer search to find a K&N dealer in your part of the world.