A Common Sense Guide to Bicycles
Bike Measurement Tool

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?