Trying to find a big bore kit for my 07 A/C 500i. I would really enjoy the power of a larger bore atv, but I absolutely refuse to own an automatic. The 500 was the biggest manual A/C atv offered for the 07 model year. Any help would be appreciated.

 

I finally found a 581cc big bore kit on fourstroketech.net. It retails for $295. Anyone have any input on this?

 

They can also regrind your cam and have valve springs as well.