k&n

I'm looking to get my father-in-law a K&N air filter and K&N wrap for his 2012 Polaris Sportsman 550. It's a "base" model one, steel wheels and camo paint. It's not EPS, it's not the two seater. I'm confused, as K&N lists TWO different part numbers for the air filters, and it appears that one...

What are your opinions on the K&N filters with a pre filter? Pros and Cons.

How can I get more power out of my 09 850? I just added new Pro comp tires and they act a little heavy. I can feel the loss of power. I added a K and N Air filter and that helped a little. Can I put the new 2012 HO intake on mine?? I hear there is a shim I can take out of the clutch to bring...

so quick question, im going to a install an HSP slip on exhaust on my 04 700 and also replace old air filter with new k&n filter with precharger. my question is is that would i have to rejett my carb if i go with this combination? i read somewhere that if i did go with the k&n filter i would...