1000 cc that i know of
a dirt bike cc is a measurment for cubic centemeters
dirt bike motor
100cc the bigger the better
A 111 cc dirt bike will go approximately 40 miles per hour. The exact maximum speed is dependent upon the manufacturer of the dirt bike.
Bigger cc = bigger motor = more power. But also heavier bike.
Cubic Centimetrs
The largest production dirt bike that I am aware of is the BMW 1200.
if u mean a motocross bike a 500
the highest for right now is 650cc but it used to be a 750cc but too many people kept on getting hurt but I'm sure that they will make a safer, faster and bigger dirt bike
a 110 cc dirt bike goes around 40 or 50 up to 60 or 65 mph
pretty sure it is 4000 cc