Has any one had any experiance with a Big Bore kit for the 650R Ninja? I'd like to turn my 2006 into a naked/streetfighter type bike and increase the displacement to something like the flat trackers are doing. I'd appreciate any information regarding a 720cc or 750cc kit. For all I know the racers are punching out the stock cylinders.

Thanks

 

Do search - EX650 big bore kit. You will find Spears Enteprises and JE Pistons. Consider contacting one of the racing teams running Kawasakis like Bill Werner Racing and Crossley-Howerton for some sources for parts and work. Usually they will give a bit of help.