The HID's are so bright you don't need the highbeams. I was night riding the dunes with my bro-in-law in front and at one point he shut off his headlights since the HID's were so bright.
Don't do it!!! Back away from the K&N.. Go over to ATVRiders.com and read. The stock foam is better. And if you do any night riding, HID's do pretty good in the stock housings.