How are BMX top tubes measured?

Top-tube length is measured along the centre-line of the top-tube from the centre-line of the seat-tube to the centre-line of the head-tube. This is a useful dimension to know if you are building a frame, since this is the length of tube you need to cut for it.

How tall should you be for a 20 inch BMX bike?

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.

What age does a 20 inch BMX bike fit?

BMX Bikes – Size Guide 20″ wheel BMX bikes are ridden by children and adults of all sizes but the minimum age for this style of bike would be between 7 and 8 years.

How do I know what tube size I need?

The best way to check what size inner tube you need is to look on the sidewall of your tyre. Tyre manufacturers print the size on the sidewalls, so look out for numbers such as ‘700x23c’ for a road bike, or ’26×1. 75′ which is for mountain bikes.