What is the purpose of the rear bike axle and how does it contribute to the overall performance of a bicycle?

The rear bike axle connects the rear wheel to the frame of the bicycle. It plays a crucial role in supporting the weight of the rider and providing stability and control while riding. The rear axle also helps transfer power from the pedals to the rear wheel, allowing the bike to move forward efficiently. Overall, the rear bike axle contributes to the performance of the bicycle by ensuring smooth and balanced movement.