20 Inch Bikes

What most people think of when the word BMX is thrown into their head, the 20inch BMX frame is the original BMX frame. 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. The correct fit for a flat 20inch BMX Bike would be a rider that stands 155+cm. BMX frames come in such a variety that choosing the perfect frame can take a little personal preference, as the size of the bike can dictate the style of riding. Like peas in a pod taller riders fit longer bikes, shorter riders fit shorter bikes. However, like freestyle having no rules, some riders prefer their bike a little longer or shorter than “recommended”. 

Since 20" bikes come in a variety of sizes now days we have broken the 20" sizing down a little more.

Bike Size (inches)

Hieght (cm)

19-19.5

140-150

20"

150-160

20.5

160-170

21

170-180

21.25<

180<