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  1. Polaris Sportsman 570
    I finally got to the dyno Dec. 2nd. The sportsman 570 rated at 44 crank horsepower puts down 33 wheel horse power. My only mods are snorkel kit and QSC clutch kit. I tried a K&N air filter first, it made less than 1 horsepower difference. I also tried a iridium spark plug(found the part...
  2. Polaris Sportsman
    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...
  3. ATV Performance Modifications
    What are your opinions on the K&N filters with a pre filter? Pros and Cons.
  4. ATV Performance Modifications
    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...
  5. Polaris Sportsman
    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...
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