Original Yamaha BWS 100 Speedometer Pinion Box

The speedometer sprocket housing is connected to the motorcycle's wheel axle and contains a sprocket that rotates in proportion to the wheel's motion, converting this motion into an accurate speed reading displayed on the speedometer. It's important to maintain and inspect the housing for signs of wear or damage to ensure proper speedometer operation and accurate speed measurement. The speedometer sprocket housing accompanies you, accurately and safely setting the pace of your ride.