Crank shortener
If the ratio of the leg to the length of the pedal causes an incorrect cycling position, a crank shortener can offer a solution. With a crank shortener, this distance becomes smaller and the pedaling movement you make while cycling can also be reduced. This makes the knees bend a little les. This option can be used in various ways, for example:
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someone with a difference in leg length;
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someone who cannot bend their knee or hip completely;
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a person with short legs;
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or for a person in growth as a temporary solution, so that they can cycle on a bicycle bought for growth.