125 pedal motorcycle after the rain, after the brake failure is what reason

125 pedal motorcycle after the rain, after the brake failure is what reason

is due to a serious overload, under the action of gravity acceleration, increased vehicle inertia, a direct result of brake failure.

is due to improper operation caused by mechanical failure;

Is the lack of necessary maintenance of the brake system, the brake cylinder in the impurities too much, lax, vacuum pump failure, brake oil is dirty or mixed with several brake oil after the use of heat resistance, brake master cylinder or pump leakage Oil, gas tank or pipe interface leakage;