I have an 86' Fourtrax 350 4x4. I need to rebuild it after hunting season. What is the biggest big bore kit I can install on it and still use the same head and carb? I was thinking maybe a 400 or 450. I know the carb will need to be rejetted, what maybe one size bigger? Thanks for your input and advise!

 

Go to highlifter.com and you will probly find more help on the big bore kits!