AMA Member Tested: K&N XStream Air Filter
July 01, 2013
A Filter That Is Easy To Clean And Stays Clean Longer
Jason Frank: K&N has been providing race-proven performance products for the power sports community for more than 40 years, and while you might think something as simple as an air filter really can’t change much, they’ve found ways to innovate.
One example is the XStream Series air filter. When I first heard the sales pitch on this filter, which as you can tell is quite different from your typical foam dirtbike filter, I didn’t buy the hype. After installing one on my KX250 and riding with it, though, I’m a believer.
The filter broadened the bottom end power delivery and made my bike feel crisper in the mid-range—helpful on a two-stroke. It didn’t produce a big hit, but rather a smooth, consistent pull all the way through.
Installation was typical, if not easier than with a traditional foam filter. The filter is a cage-less two-piece design with a tongue-and-groove lip that provides additional sealing peace of mind.
Typically through a full practice day, I’ll go through about three filters. Surprisingly, the K&N XStream filter lasted the whole day and provided consistently strong airflow. When the filter does get dirty, you just spray it down with K&N’s Power Kleen spray and then rinse it with water.
Overall, I was impressed. The filter appeared to flow better, stayed clean longer and cleaned up easier than a foam filter. It also sealed great. The only downside is the cost. The filter runs about four times the price of a traditional foam filter. But if you’re looking for a bit more power and a lot less hassle, it’s worth it.