Once you are comfortable with the power of your 125cc motorcycle, you may want to make it faster. Increased airflow, larger exhaust piping, decreasing weight along with other aftermarket motorcycle modifications will have you rocketing down the track faster than before. A faster 125cc motorcycle gives those who race an advantage and leisurely riders more of a thrill. Caution must be taken after upgrading the performance of your 125cc motorcycle. Increased acceleration and top speed also increase the the chances of bodily harm in the event of a crash.
Disassemble the air box and remove the filter. The filter is one of the cheapest components of a 125cc motorcycle but one of the most important. Fuel ignites with the help of air, so the more clean air that flows into the engine the more combustion you’ll get. Air filters come in different colors, such as yellow, red or white. This helps riders know when they are dirty. If your 125cc motorcycle air filter is dirty, spray it with cleaner or replace with an oiled aftermarket filter. Also, clean any gunk out of the air box with contact cleaner, making sure no grime or dirt falls in.