Find the bore and stroke specifications of your bike.
Multiply the bore diameter against itself and further with the stroke length and 3.14/4. ...
Divide the result by the number of cylinders.
How to calculate Engine CC's
Forumla – Bore (mm) X Bore (mm) X Stroke (mm) X 3.1416″ = Engine cc.
Example – 90.5 X 90.5 X 69mm X 3.1416 = 1775cc. (to get the Volume of 1 cylinder in CC divide by 4)
Example – 1775 ÷ 4 = 443.75.