Rear drive sprocket for Active mopeds. The rear sprocket is mounted on the wheel and transmits rotation from the chain to the rear wheel. The gear ratio depends on the number of teeth: more teeth give quicker acceleration, fewer give a higher top speed.
Signs of wear: the teeth become sharp and hooked, the chain jumps and stretches quickly. The sprocket and chain are replaced together, and before buying you should check the chain pitch, the number of teeth and the wheel type. As the name says: 428 chain, 36 teeth.
428 chain, number of teeth: 36.
