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The bike pedal arm connects the pedal to the crankshaft of the bicycle. It serves to transfer the rider's pedaling force from the pedal to the chainring, which then drives the bike forward. The pedal arm's length and position affect the rider's pedaling efficiency and power output. Overall, the pedal arm plays a crucial role in the functionality of a bicycle by enabling the rider to propel the bike forward through the rotation of the pedals.

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3mo ago

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