I just recently bored out my 400ex to a 86 mm high compression piston. im not sure what the cc of my quad is now. 416, 426 440??? of anyone knows please let me lol.
fastyz85
01-17-2007, 05:29 PM
its a 406, thats what mine is(stock is 85 so 86=406,87=416,88=426, and 89=440)