The sway bar couples each side of the front suspension together. By removing it, you will get more body roll on the corners. Many of the FireCat guys remove them.
Try it....see how it works for you!
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2003 AC F5 (Jr's Dec 07 SOTM & 2008 SOTY)
2003 AC F7 EFI SP (April 06 SOTM)
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I ran my EXT for years without one, and I think it works better in deep snow without it. They definitely help if you're hauling ass in twistys on hard pack.