How Do I Know What Size Bmx Bike I Need?

by | Last updated on January 24, 2024

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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 size BMX bike should I get for my height?

Rider Height Rider Age (Avg.) Top Tube Length
4′ 5′′ to 5′ 2′′


10 to 13


19′′ to 19.5′′
4′ 8′′ to 5′ 5′′ 10 to 13 19.5′′ to 20′′ 5′ 6′′ to 5′ 10′′ 13 & over 20.5′′ to 21′′ 5′ 8′′ to 6′ 13 & over 21′′ to 21.5′′

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 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.

What size BMX bikes do adults use?

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 bike?

A classic BMX is a good choice if you want to race on dirt tracks, but still want to do some tricks and jump riding; a freestyle BMX is best if you want to learn “flatland” street tricks or ride in skateparks; and a jumper BMX is best if your main aim is to get some serious air.

Pick the right size frame for your body

.

Is a 20 inch BMX bike for adults?


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.

Are BMX bikes 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.

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 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.

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.

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.

Are BMX bikes for adults?

Can adults ride BMX bikes? A question we get asked all the time.. The answer –

of course you can

! BMX bikes aren't just sized for kids..

What does a 20 inch bike mean?

20′′ kids bikes are

slightly larger than the 16′′ frame and can accommodate older, taller children

. These bikes may have hand brakes, in addition to the coaster brake, to help the child learn to use their hands to slow or stop.

What size BMX Should I get my son?

Size of the BMX Bike Height of Kid/Rider Top-tube Length 12′′ 2-3 ft 11.5”-13” 14′′ 2′ 8” – 3′ 4.” 12.8”-15” 16′′ 3′ – 3′ 8” 14.5”-17” 18′′ 3′ – 4′ 6” 17”-18.5”

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 age is a 26 inch BMX bike for?

Most adult bikes that are small enough for an

11-year-old or 12-year-old

will most likely come with 26 inch or 27.5 inch wheels.

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.

How do I choose my first BMX?

How do you choose an adult BMX bike?

Ideally,

choose a BMX with a two or three-piece Chromoly crank for strength and durability

. Crank lengths can vary from 145mm up to 190mm – however most freestyle riders will opt for shorter cranks to allow for clearance when performing tricks, a common choice is 165mm.

What makes a BMX bike different?

BMX bikes are still designed for racing, although you don't have to race to enjoy their nimble and precise handling. They have 20-inch wheels, 2- or 4-piece handlebars, small seats, long cranks and strong rear hand brakes.

The frames are light and sturdy, and the higher the price, the lighter they get

.

Can adults use 20inch bikes?


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

.

What size is an expert BMX bike?

EXPERT: Next up in size is Expert. Expert bikes have a

18.87” TT length

and fit kids from 4'8” – 5'4”(9 – 11 y.o.).

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

.

How do you measure a BMX bike wheel?


Multiply your wheel's radius by two to find the wheel's diameter

. Now, measure the tire's width by placing the measuring tape across the top of it. The numbers obtained are your standard measurements. Be sure to list diameter first, followed by the tire width.

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.