Factory Supply Mountain Bike Crank Chainwheel with Plastic Chainguard

The multi-stage flywheel is based on the single-stage flywheel, adding several flywheel plates and combining them with the sprocket on the central shaft to form various transmission ratios, thus changing the speed of the bicycle.

Sprocket is a kind of wheel with cogged sprocket, which is used to mesh with the block with accurate pitch on the chain link or cable. Sprockets are widely used in chemical industry, textile machinery, escalators, wood processing, three-dimensional parking garages, agricultural machinery, food processing, instrumentation, oil and other industries. The bicycle sprocket is made of high-strength steel to ensure that it reaches the required tension.