I don't want to argue with everyone but I just got an after marker Heavy Duty Extreme Service Belt and I've never been happier. I went thru (2) polaris belts. My clutches are aligned just fine, I just drive it really hard.
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2008 Sportsman 800 H.O.
Burnt Metallic Orange in color
Black Wheels
3 Headlight Mod (If you haven't done this yet, DO IT!)