How increase cc in bike?

Increasing the cc (cubic centimeters) of an internal combustion engine, including a motorcycle engine, involves modifying engine components to displace a larger volume of air and fuel during each combustion cycle. Here are a few methods to increase cc in a bike:

1. Bore Up:

- This method involves increasing the diameter of the cylinder bore. It requires replacing the existing cylinder and piston with larger diameter ones. However, this modification may require additional changes to the engine block, head, and other components to ensure proper fitment.

2. Stroke Up:

- Increasing the stroke length of the piston allows more air and fuel to be drawn into the cylinder. To achieve this, the crankshaft and connecting rod may need to be replaced with longer ones, along with modifications to the cylinder and cylinder head.

3. Overboring:

- This is similar to boring up, but involves increasing the cylinder bore diameter beyond the manufacturer's specifications. It requires precise machining and may significantly alter engine characteristics, potentially affecting reliability.

4. Big Bore Kit:

- Many aftermarket companies offer big bore kits that include a larger cylinder, piston, and other necessary components to increase the engine displacement. These kits are designed to fit specific motorcycle models and provide a straightforward way to increase cc.

5. Cylinder Sleeve:

- Another approach is to install a cylinder sleeve within the existing cylinder bore. This allows for a larger piston to be used without extensive machining. However, it may require modifications to the cooling system and other components.

6. Piston Replacement:

- In certain cases, it's possible to increase displacement by using a piston with a larger diameter that still fits within the existing cylinder bore. This may involve minor modifications to the piston, cylinder head, and other components.

It's important to note that increasing the cc of an engine can have significant implications for its performance, fuel efficiency, reliability, and emissions. Proper engineering, modifications, and tuning are necessary to ensure that the engine operates safely and efficiently with increased displacement. It is recommended to consult with experienced mechanics or engine builders before attempting major engine modifications.