Measuring a BMX Bike
BMX bikes come in two stframe_sizeyles: racing and freestyle. The frames are made from steel or aluminum, and take 20" or 24" tires. A BMX bike is measured by the length of the top tube. Here are both styles of BMX bike, each with detailed measuring instructions and a frame diagram showing you exactly what to measure.
What style bmx bike do you have?
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Freestyle BMX Bike
Freestyle BMX bikes are heavier and stronger with 20" tires.
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Racing BMX Bike
Racing BMX bikes have strong, light frames with 20" or 24" tires.