BMX Bike Sizing
Bike Rider Sizing Chart and information
Want to know what size bike to get checkout this bike sizing chart? Believe it or not but bikes are sold in many different sizes frames. Not only are the frames made in different sizes and toptubes the wheels are various sizes too. For example you can have a 24" wheeled bike with a 21" top tube or a mountain bike with 26" wheels and a large frame. Even the pa sizes change on the different size bikes. One example of this is crank length. 180mm is usually used on bigger bikes while a 115mm is used on a micro mini bmx bike. Handlebar sizes, pedals, chains, brakes, tire and tubes, rim strips, grips, gears, bottom brackets, seatposts, seats, and spoke lengths all vary in size and color and type. Imagine being the guy who has to know all this information? Thats me.
| Rider Height | Frame Size | Toptube Length | Stem Length | Bar Rise | Bar Width | Crank Length | Gearing |
|---|---|---|---|---|---|---|---|
| 4’4″ & under | Micro | 15″ – 16.5″ | Mini: 25mm – 35mm | 2″ – 2.5″ | 20″ – 22.5″ | 145 – 155mm | 41-43 / 16 |
| 4’2″ – 4’10” | Mini | 16″ – 17.5″ | Mini-Mini XL: 30mm – 40mm | 2″ – 3.5″ | 21″ – 23.5″ | 155 – 165mm | 41-43 / 16 |
| 4’6″ – 5’1″ | Junior | 17″ – 18.5″ | Mini XL-Expert: 40mm – 45mm | 3″ – 5″ | 22″ – 25″ | 160 – 175mm | 42-43 / 16 |
| 5’0″ – 5’4″ | Expert | 18.5″ – 19.5″ | Expert-Pro: 43mm – 48mm | 5″ – 7″ | 25.5″ – 27″ | 170 – 175mm | 42-43 / 16 |
| 5’2″ – 5’6″ | Expert XL | 19.5″ – 20″ | Expert-Pro: 43mm – 48mm | 6″ – 7″ | 25.5″ – 27″ | 170 – 175mm | 42-43 / 16 |
| 5’3″ – 5’8″ | Pro | 20″ – 20.5″ | Pro: 50mm – 55mm | 7″ – 8″ | 27″ – 28″ | 175 – 180mm | 43-44 / 16 |
| 5’7″ – 6″ | Pro XL | 20.5″ – 21.25″ | Pro XL: 50mm – 55mm | 8″ + | 28″ | 180 – 190mm | 44 / 16 & over |
| 6″ & over | Pro XXL | 21.25″ – 22″ | Pro XXL: 52mm – 60mm | 8″ + | 28″ | 180 – 190mm | 44 / 16 & over |
The next size bigger bike is XXXL, but XXXL bikes are usually only sold in frames. The next wheel size bigger is 24″. 24″ Wheel bikes are called Cruiser. There is also a 22″ wheeled bike. We have the Verde Spectrum in 22″. After 24″ is 26″, 27.5″ and 29″. Some of these larger bikes can be single speed or have multiple gears for off road and hilly terrain.
Mountain, Road, track and ebikes are available in many sizes as well. Learn more.