BMX Size Chart – How To Decide The Right Size?

Being a start-up bike enthusiast, you may attempt to find a bike that is the right fit for your liking. Most often suggest that it is all about the quality and affordability, but also, it takes the right amount of comfortability in your ride to control it at ease.

In this case, you should know what size to pick in the variety of bikes to choose from in the store. Try also to find the consultant to give you additional tips at the beginning of your BMX riding experience!

The Kind of Ride

You need to consider what type of ride you engage in for a better choice in sizing. Specifically, here are the preference;

Trail Riders

They typically prefer bigger and stable bikes. Specifically, they look for those with longer TT, CS(Chain Slay), and an HT(Head Tube) angle that is somehow a slacker. It is because it makes the ride more comfortable even with large jumps.

Park Riders

The riders prefer a more responsive bike in their riding experience. Typically, it requires a shorter CS, TT, and steeper HT angle. It allows them to control the bike more freely, that results in a much better movement.

Street Style Riders

The athletes prefer to either sway at the end of the scale size or the middle depending on the preference of the rider. The kind of ride is usually tougher, and it requires a much more dependence on durability and flat landings rather than the size.

A Step-By-Step Process In Choosing The Right Size of Bike

Follow the steps to make a legit choice;

1. Bike Height Chart

Each bike size has the required allotment depending on height. Specifically, these are the following;

4 feet 11 inches up to 5 feet 3 inches: 13 to a 15-inch bike

5 feet 3 inches up to 5 feet 7 inches: 15 to a 16-inch bike

5 feet 7 inches up to 5 feet 11 inches: 16 to a 17-inch bike

 6 feet up to 6 feet 2 inches: 17 to a 19-inch bike

6 feet 2 inches and up: 19 to 21 inches and up

2. Bike Size Calculation

It can be done by standing with your legs 15 to 20 inches apart. Make sure that you are not wearing your shoes to have an accurate measure reading of the height from the ground to crotch.

Then, select the bicycle that you want depending on the type of ride. Use a bicycle calculator or solve it manually with—

Road ride: Measurement cm x 0.70= frame size

Mountain ride: Measurement cm x 0.66= frame size

3. Test The Comfortability

To know if you will achieve the maximum comfortability, it is best to test your bike. First, lean with your elbows sitting on the bike.

Then, put your leg to the lowest point on the ground. Try to paddle and see if you have a nice bend beneath your knee. Try riding it with movement; if it feels good, then it is the right bike for you!

Also, it is important to know that the saddle height is important, for it depends unto how you can boost the power using your feet. If the height is not desired, you would often find yourself stopping and attempting to adjust it.

How To Measure A BMX Bike

The BMX frames typically have thick tubing and with a standard 20” tires to support the rider especially when riding and doing tricks. The top tube length can be used to determine the frame size. To know more about the process, here are the following steps;

First, you need to find the intersection of the top and seat tube. And then, measure their distance. This would be known as the length of the top tube. Then, record the measurements in centimeters and inches. Then, once the size is obtained, compare it to your height and see if it is suitable for you.

Parts of The Bike Details In Size

Crank arm lengths- It comes with different sizes depending on what is needed, especially in attempts for modification. The traditional standard size was 175mm and results in a smooth and stable ride and creates a wide balance point.

Park style rides tend to be 10mm shorter, specifically 165mm, to avoid the pegs to hit the rear foot.

Fork offset- The angle plays a significant role in the feeling of your front end as you maneuver your bike. A 30mm or higher angle can give stability when doing a jump box or needing to pull back for a jump. Though, for a street rider, a 28mm or 20mm is preferable due to the quick and responsive front end that it requires.

Bar width- It comes with a wide variety of shape and sizes which results in easily maneuverable characteristic and easy movement. It also depends on height and body type.  Most comes with 28.5 inches to 30 inches in standard size, but some prefer smaller bars to ensure that their knees are clear when doing tricks.

Wheels- Single wall rims are the standard with one horizontal wall for the bike. Meanwhile, double wall rims mean having two horizontal walls for rims that offers more strength. The shape varies, but the double wall is much more preferable than the single wall for it is said to have a higher quality.

The Bike Size Went Wrong

With this occurrence, go to the bike store and find the seller, or contact the manufacturer to send the bike back. Though, if you find the action too hassle, here are some of the things that you can do.

First, you can move your saddle to the rear or front depending on preference. Then, replace the bike with a longer or shorter stem to help you change your position. You can also acquire a longer post for the seat. 

Final Say: Size It Up!

To have the bike of your preference, you need to ensure the comfortability it can offer in order to ride at ease. Knowing the accurate size for your height can help you in choosing your bicycle, along with its quality, and affordability.

Also, it is also an advantage to know unto which track and for what reason you are using the BMX bike for, in order to have rooms for modification in cases that you know can help your ride better.

Since you are now equipped with the basic knowledge and calculation for your bike size, know how to find and test the bike that you long for!