How Big Should My Bmx Bike Be?

by | Last updated on January 24, 2024

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Rider Height Rider Age (Avg.) Top Tube Length 3′ 8′′ to 4′ 6′′ 5 to 7 18′′ 4′ 5′′ to 4′ 10′′ 8 to 10 18′′ to 18.5′′ 4′ 5′′ to 5′ 2′′ 10 to 13 19′′ to 19.5′′ 4′ 8′′ to 5′ 5′′ 10 to 13 19.5′′ to 20′′

How do you size a BMX bike?

A frame's size is determined by

measuring the top tube length of the frame

. The top tube (tt) measurement is taken from the center of the seat tube to the center of the head tube. To determine your frame size, you must measure you height. Take off your shoes and remove anything from your head.

What age is a 20 inch BMX bike for?

20′′ wheel BMX 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

. Mountain Bikes: Standing flatfooted on the ground; you should have a minimum of 3′′ clearance between yourself and the top tube(cross bar) of the frame.

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.

Can adults ride 20 BMX bikes?

Can Adults Ride 20-inch BMX Bikes?

Adults can ride 20-inch BMX bikes provided they have prior experience in cycling

.

Should I get a 24 inch BMX?


If you plan to run errands on your BMX, a 24′′ model would be better suited for the task thanks to it's more forgiving tire size and larger frame

.

What size BMX do adults ride?

Adults usually ride BMX bikes that have a frame size of

larger than 20 inches

. But the top tubes can be 20.5 to 21.5 inches. There are larger sizes such as 22, 24, and 26. If you're less than 5 feet in height then it's better to go for sizes lower than 20 inches such as the Junior.

How do I choose a BMX frame?

As with all bike frames, differences in BMX frame geometry will affect the bike's handling. As well as top tube length (outlined above), some of the main things to consider are

head tube angle, seat tube angle and chainstay length

.

What age is a 16 inch BMX bike for?

Age Range for 16 Inch BMX Bikes

16 inch BMX bikes are best suited for kids

between 5 and 8 years old

. An even better indicator of appropriate bike size is height. 16′′ BMX bikes are a good fit for children between 3'7′′ and 4'6′′.

What age is a 24 inch BMX bike for?

A 24 inch wheel bike is the recommended size for a kid who is

between 8 and 9 years of age

. However, age is not the best yardstick while deciding the wheel size for the kid. Height is. A child who is between 4'2” and 4'9” is the ideal height for a 24 inch bike.

What age is 24 inch bike for?

Wheel Size Age (Years) Height (Inch) 16 Inch / 18 Inch 5 – 7 3′ 8′′ – 4′ 2′′ 20 Inch 6 – 9 3′ 10′′ – 4′ 6′′ 24 Inch

8 – 11

4′ 2′′ – 4′ 9′′
26 Inch 9 – 12 4′ 6′′ – 5′ 0′′

How do I know my BMX frame size?

Are BMX bikes supposed to be small?

Are BMX bikes supposed to be small?

Not all BMX bikes are small

. The smallest sizes are Micro Mini, Mini, and Junior. These sizes are specially catered for kids.

Can you put 24 wheels on a 20 bike?

Condensed Answer:

In most cases, 24-inch wheels will be too big for a 20-inch fork and frame, especially if the wheel is equipped with a large tire

. Thus, it's best to avoid this conversion as it will more than likely not work. In a rare scenario, the wheel may fit.

How do you size a BMX bike for kids?

Age Appropriate Wheel Size in Inches Appropriate wheel size in cm 1-4 years Balance Bike 70-90 4-6 years 12 80-100 5-9 years 14 90-130 7-14 years 16 100-140

Can a grown man ride a BMX bike?


Adults can definitely ride 20-inch BMX bikes

, but it is recommended that they wear appropriate safety gear to keep themselves safe. This type of bike can be more difficult for adults than other types of bikes because the smaller wheels require a lot more balance and coordination in order to ride safely.

What's the biggest BMX bike size?

Bmx bikes come in a bunch of different sizes ranging from 12′′ all the way to

26′′

. The most popular sizes are in the 20′′ range.

What age is a 22 inch BMX bike for?

A 20 inch wheel BMX bike would be a good enough size for kids who are between 10 years and 13 years of age. Depending on the height of the child you can go for a 20 inch wheel with appropriate frame size. 22 inch BMX bikes

mostly cater to adults

.

Can you race 26 BMX?


You have been able to run 26 inch bikes in NBL cruiser classes for as long as I can remember

. A few years ago Walter Dunn Jr. won the NBL Grands and national # 1 on a Sinister DNA. I have a Chumba DSL I run every once in a while just for fun and Lars Tribus is always running his 26 inch at our local BMX track.

What is a 26 BMX bike?

26 inch BMX bikes are

built just for those that want a bike the size of a typical mountain bike but with the simplicity and durability of a BMX bike

.

What size is a full size BMX?


20” Wheels

are the most common and are the true size for BMX.

Are BMX all the same size?


BMX bikes tend to come in one frame size (although there are some variations in length)

. It's the wheel size that can be changed and this can be chosen depending on the height/age of the rider.

Can adults use 20inch bikes?


A 20 inch bike can be made for a child of age six or an adult

.

Do they make 24 inch BMX bikes?


24 inch BMX bikes

are great for those that want to find the happy medium between a “little kids” 20 inch BMX bike and an “adult” bike. 24 inch BMX bikes will give you the ability to cruise around, ride some ramps, jump some curbs and do some tricks yet give you a little more room than the typical 20 inch BMX bike.

What should I look for in a BMX bike?

Type Description Features Freestyle A super-sturdy stunt and trick bike Ultra-beefy frame and wheels, pavement-ready tires, cable-detangling headset, axle pegs Jump Sometimes called a Dirt Jumper, these are essentially a fusion of BMX and freestyle bikes Sturdy frame and wheels, rear brake, knobby tires

What size bike do professional BMX riders use?

Pros generally ride bikes that have a Top Tube of

20.5 inches to 22 inches in length

. Shorter riders, including kids, generally have a Top Tube of 18 to 20 inches in length. The Top Tube for a Pro-size bike is 20.5 inches to 21 inches in length.

Can you sit down on a BMX bike?


You can sit on a BMX bike provide you raise the saddle to a more comfortable position

. With a seat post above the standard position, a BMX bike can be ideal for commuting and going long distance. You can even add a seat cover to give the saddle more padding to make the bike more comfortable.

Kim Nguyen
Author
Kim Nguyen
Kim Nguyen is a fitness expert and personal trainer with over 15 years of experience in the industry. She is a certified strength and conditioning specialist and has trained a variety of clients, from professional athletes to everyday fitness enthusiasts. Kim is passionate about helping people achieve their fitness goals and promoting a healthy, active lifestyle.