We get a ton of phone calls asking what size BMX frame they or their child should ride. And the answer we always provide is that we don't know. How can we judge what size BMX frame you our your kid should ride when all we have is a voice on the phone. There are a ton of frame size charts out there, almost every bike shop and mfg has one.
And we have a rule of thumb that we go by, but that does not size you up for what size you should ride. But here is our ENVY Size Chart with a height listing that seems to be a popular one that people go by.
As you can see there is a lot of overlap from what they typically suggest for size. Now don't get us wrong, it is a good thumbnail to go by, but it is not science. The best way to size you up is to watch you ride, and to see how you feel on the bike. We can't tell you what feels good to you, everyone has a different preference for the way they like their bike to ride. Some like to be stretched out, some like to ride more upright. We see it all the time, you would expect a rider to ride a certain size frame or bar and then they want something different.
If you have a local BMX Race Shop, head on over, they are a wealth of knowledge and will be glad to help size you up, or go out to your local track and talk to the older experts or the local Pro's, they have been in it a while and can help size you up for your particular build and riding style.
It may take some trial and error, but you can get it set up pretty quick and easy. Here are a few tips to remember when modifying your set up as well
STEM LENGTH : Every 6mm of stem length is equal to a 1/4". You will always want to try to run the shortest stem possible for the frame to make sure the steering is proper. The longer the stem, the more "Oversteer" you will feel.
BAR POSITION : Typically you want your bars in line with your headtube angle for proper handling. You can pull them back slightly to bring your bars back for a shorter rider area, but don't go back to far. And the same going forward, you can push them forward slightly, but don't "Chicago" your bars. Never go past Vertical on your bar set up.