Ningbo Shenglu Bicycle Co.,Ltd located in NINGBO city,Zhejiang province,China. We were founded in 1998. Our company takes up 80,000㎡with registered capital 14.5million US dollars.We are specialized in manufacturing of bicycle hubs,and freewheels. We are one of the HUB&QUICK RELEASE standard decide company of China.We have annual production capacity of 5.6million alloy hubs, 10million prs steel hubs, 3million multi-speed freewheels, 2 million single speed freewheels .

Bicycle flywheel

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The bicycle flywheel is a component installed at the rear end of the frame's rear lower fork and on the outside of the right side of the rear wheel axle. It is located on the rear wheel rim and is a small gear that acts like a clutch. When pedaling, the flywheel will connect with the jack, and the rotational force of the flywheel will be transmitted to the core through the jack. The core drives the rear axle and rear wheel to rotate, thereby pushing the bicycle forward. The bicycle flywheel is an important part of the bicycle transmission system. It is connected to the sprocket through a chain to form the bicycle's drive system.