Over the years this frame has been made in a variety of sizes ranging from 19 8 21 75inches with variations to the chainstays head tube angles and seat tube angles the 20inch bmx frame has been through a lot however one thing has remained the same the riders.
Bmx bike sizes.
Most bmx bikes have 20 tires while the larger frames may use 24 tires also known as cruiser class bmx bikes.
Including 20 25 20 5 20 75 and 21.
As a minimum you will need at least a 23 inside leg to be able to stand over a full size bmx bike.
The most popular sizes are in the 20 range.
Bmx bike frame sizing is generally measured in inches in.
Height ft in cm top tube in crank size mm 4 122.
When figuring out frame size only the rider s height is important.