However, the caliper brake is readily available and so are the BMX standard wheel sets.
然而，制动钳，是现成的，所以是标准的小轮车轮台。
The caliper brake system can only be used with the Steering Stirrup that supports a standard BMX wheel.
卡钳制动系统车轮只能用于指导马蹬，支持一个标准的小轮车。
The caliper brake system can only be used with the Steering Stirrup that supports a standard BMX wheel.
卡钳制动系统车轮只能用于指导马蹬，支持一个标准的小轮车。
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