2. Remove the exhaust restrictor. The exhaust restrictor is a small metal plate that is welded into the exhaust pipe. It restricts the flow of exhaust gases, which also limits power output. To remove the exhaust restrictor, you will need to cut it out with a hacksaw or angle grinder.
3. Re-jet the carburetor. The carburetor is responsible for mixing fuel and air together in the correct ratio for combustion. By re-jetting the carburetor, you can increase the amount of fuel that is delivered to the engine, which will result in more power. To re-jet the carburetor, you will need to remove the carburetor from the bike and replace the main jet with a larger one.
4. Install a performance spark plug. A performance spark plug can help to improve ignition efficiency and increase power output. To install a performance spark plug, simply remove the old spark plug and install the new one.
5. Perform a test ride. After you have completed all of the above steps, take the bike for a test ride to ensure that it is running properly. You should notice a significant increase in power output.