Vibration Reduction Plate ( For Royal Enfield )
It inhibits the flex/vibration caused by having a heavy rotor magnet on the end of the RH shaft. This is done by the additional support of another bearing.
Minimizing vibration above 60KM, giving a smoother ride and less rider fatigue.
Also the fatigue of the motorcycle in general is lessened having lower vibrations and increased bearing life.
Reduced cam wheel wear because of less crank oscillation which stops churning on the gear; also closer cam backlash can be maintained for longer..