Size Guides

We are here to help you get the right sized BMX bike for your situation! With so many different bikes to choose from it can be quite daunting, but don't worry- It's easy! Just pick either Freestyle or Race, measure up your height and get cracking! If you have any questions shoot us an email at help@luxbmx.com

Which guide do you need?

Pick the guide that matches what you are shopping for. If you are between sizes or buying for someone who is still growing, email help@luxbmx.com with their height and we will tell you what we would put them on.

Complete bikes Freestyle bike sizing Street, park, dirt and kids bikes. Wheel size by rider height, then top tube. Complete bikes Race bike sizing Micro through to Pro XXXXL and cruiser, sized by class and rider height. Frames Frame sizing Buying a frame on its own? Top tube length is the number that decides the fit. Protective gear Helmet sizing Measured around the head, nothing to do with bike size.

20 inch BMX sizing

A 20 inch bike is the standard adult BMX and suits riders from about 147cm up. At this wheel size the top tube is what changes the fit, so pick that by height.

Rider heightWheel sizeTop tube
60 to 91cm12"12 to 12.5"
81 to 106cm14"14 to 14.5"
96 to 122cm16"16 to 16.5"
122 to 147cm18"18 to 18.5"
147 to 157cm20"19.75 to 20.25"
157 to 168cm20"20 to 20.5"
168 to 175cm20"20.25 to 20.75"
175 to 183cm20"20.5 to 21"
183 to 190cm and up20"20.75 to 21.5"
160cm and up22"21 to 22.25"
160cm and up24"21.75 to 22"
160cm and up26"22 to 23"

Sizes overlap on purpose, so personal preference comes into it. If you land in two bands, riding style breaks the tie: longer for flow, trails and transitions, shorter for technical street and park.

Read the full buying guide

BMX race bike sizing

Race frames are sized by class, and the class you ride is set by rider height rather than age.

SizeRider heightTop tube
Micro (18" wheels)Under 120cm16.25"
Mini (20" wheels)110 to 140cm17 to 18"
Junior120 to 150cm18.25 to 18.75"
Expert130 to 170cm19.5 to 19.75"
Expert XL145 to 170cm20 to 20.75"
Pro150 to 175cm20.25 to 20.75"
Pro XL165 to 180cm21 to 21.25"
Pro XXL170 to 185cm and up21.5 to 21.85"
Pro XXXL175cm and up22"
Pro XXXXL180cm and up22.5"
Cruiser (24" wheels)175cm and up21.5" and up

Heights overlap between classes on purpose. Where you land in two, a growing rider is usually better on the larger, and a rider who wants the bike to turn faster on the smaller. Some brands label the Pro size Pro L, with the same fit.

Read the full buying guide

Buying a part?
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Wethepeople Battleship 20 Inch Bike - Mahagony Metallic The Wethepeople Battleship 20 Inch Bike, with a bronze 4130 Chromoly frame, black handlebars, and tires, is displayed indoors on a wooden floor with a painted mural in the background.
Wethepeople Battleship 20 Inch Bike

$1,999.99 AUD

Mahagony Metallic
Right Hand Drive - 20.75Left Hand Drive - 20.75
Sold out
The Kink Carve 16 Inch Bike (2026) features a vibrant green finish, thick black tires, a sleek black seat, and sturdy handlebars. With its reinforced frame and reliable chain drive system, it's ideal for thrill-seekers. The Kink Carve 16 Inch Bike (2026), featuring a gold frame and black wheels, boldly stands against a dark, textured brick wall, embodying its daring spirit.
Kink Carve 16 Inch Bike (2026)

$748.99 AUD

Patina Green
16.5
Sold out
Sentence with product name: White Kink Drifter 26 Inch Bike with black wheels and a tan seat against a plain white background. Black Kink Drifter 26 Inch Bike with a low-profile frame and straight handlebars, displayed against a plain white background.
Kink Drifter 26 Inch Bike
$948.99 AUD
Matte Midnight Black
Gloss Wolf Grey
Matte Concord Purple
22.25
Sold out
The Wethepeople CRS FS 18 Inch Bike is a black BMX freestyle bike featuring a compact 18" frame, thick tires, straight handlebars, and bold “WE THE PEOPLE” branding on the frame. The Wethepeople CRS FS 18 Inch Bike is a black BMX freestyle bike featuring a compact 18" frame, thick tires, upright handlebars, and gyro-equipped brakes, displayed on a plain white background.
Wethepeople CRS FS 18 Inch Bike

$999.99 AUD

Metallic Soda Green
Black
Dark Graphite
18
The Colony Horizon 12 Inch Bike is a small orange BMX with an alloy frame, black training wheels, pedals, and handlebars—shown in profile on a white background—making it the perfect starter bike. The Colony Horizon 12 Inch Bike showcases a transparent, lightweight alloy frame, accompanied by 12-inch black wheels and handlebars that include grips and a lever, making it an ideal choice for young riders.
Colony Horizon 12 Inch Bike

$699.99 AUD

Black Ano
Matte Translucent Teal
Clear Navy (Blue)
Clear Pink
Orange
Polished
11.9
Sold out
Forgotten Damned 20 Inch Bike / Gloss Metallic Gold / 21TT The Forgotten Damned 20 Inch BMX bike, in vibrant yellow with black tires and a sleek black seat, is designed for the advanced rider. Its simple frame has high handlebars and rear wheel foot pegs ideal for thrilling stunts and daring maneuvers.
Forgotten Damned 20 Inch Bike
$727.99 AUD
Gloss Black
Gloss Metallic Gold
Smoke Grey
21
Black Cult Juvi 12 Inch Bike against a white background. The Cult Juvi 12 Inch kids' bike boasts a white and black design with thick tires, a cushioned seat, an aluminum frame, and a premium BMX build.
Cult Juvi 12 Inch Bike

$749.99 AUD

$759.99 AUD

All Black
Matte White
Matte Pink
13.25
Sold out
A black Kink Curb 20 Inch Bike with thick Mission Tracker Tyres, a sturdy frame, Kink Ace Grips on the handlebars, and a padded seat. The brand "Kink BMX" is displayed on the frame. The Kink Curb 20 Inch Bike, in black, showcasing its sturdy frame and thick tires, is set against a dark textured background. It boasts a curved seat, Kink Ace Grips for enhanced control, and Mission Tracker Tires that ensure excellent traction on any terrain.
Kink Curb 20 Inch Bike
$599.99 AUD
Marble Black
Cobalt Blue
Desert Gold
20
Sold out
Side view of the Radio Revo Pro FS 20 Inch Bike, an orange BMX with a 20-inch top tube, black handlebars, seat, and tires, displayed on a white background. Radio Revo Pro FS 20 Bike / Black / 20TT
Radio Revo Pro FS 20 Inch Bike
$549.99 AUD
Black
Fresh Mint
Turbo Blue
Burned Orange
20
Sold out
A gray Kink Kicker 18 Inch Bike with thick black tires, a padded seat, and straight handlebars is shown against a white background. Designed for younger riders, the Kink Kicker 18 Inch Bike boasts top-notch parts for an exceptional riding experience. The Kink Kicker 18 Inch Bike, featuring a sleek silver frame complemented by black handlebars, seat, and tires, is showcased against a dark background. This bike is an ideal choice for younger riders eager to dive into the sport of BMX riding.
Kink Kicker 18 Inch Bike

$669.99 AUD

Digital Chameleon
18
Save $100.00
Skyway TA Replica 20"" PRO Bike (2022) / Chrome/Red / 21.5TT Skyway TA Replica 20"" PRO Bike (2022) / Chrome/Blue / 21.5TT
Skyway TA Replica 20 Inch PRO Bike

$1,899.99 AUD

$1,999.99 AUD

White/Blue
Chrome/Blue
Chrome/Black
Chrome/Red
White/Red
21.5
The Sunday Primer 18 Inch Bike (2025) in red, viewed from the side against a white background, features black handlebars, seat, and tires along with pro-style frame geometry and Odyssey Springfield brakes for enhanced control. The Sunday Primer 18 Inch Bike (2025), shown from the side on a white background, features a yellow frame with black handlebars, seat, and tires, plus pro-style BMX frame geometry.
Sunday Primer 18 Inch Bike (2025)

$799.99 AUD

$859.99 AUD

Fire Engine Red
Gloss Yellow
Gloss Black
Metallic Gold
Matte Grape Soda
18.5
The Wethepeople Envy 20 Inch Bike 2025, shown in profile against a white background, features Eclat parts, a straight top tube, thick tires, wide handlebars, and a padded seat. The Wethepeople Envy 20 Inch Bike 2025 is shown in side profile on a white background, featuring a metallic frame, black handlebars and seat, thick black tires, and Eclat components.
Wethepeople Envy 20 Inch Bike 2025
$2,299.99 AUD
Black Chrome
Trans Black
Black
Translucent Black
21 - LHD20.5 - LHD21 - RHD20.5 - RHD
Sold out
A black Division Fortiz 20 Inch bike with thick tires, a padded seat, and "Division Fortiz" emblazoned on the frame. The bike features rear pegs, a Chromoly frame, and a sturdy build. A gray Division Fortiz 20 Inch Bike with a black seat, handlebar grips, and tires. The Chromoly frame features the words "FOR 12" and "Division Fortiz" printed on it.
Division Fortiz 20 Inch Bike

$759.99 AUD

Black/Polished
Pure Grey
21
The Radio Zuma 14 Inch Bike is shown in blue with thick black tires, training wheels, and a black seat, displayed in profile on a white background. The Radio Zuma 14 Inch Bike is a small, lightweight children's bike in green with black tires, a black seat, and blue accents, shown against a white background.
Radio Zuma 14 Inch Bike
$899.99 AUD
Dragon Green / CST Tyres
Navy Blue Metallic
Urban Olive Metallic
12
The Wethepeople Reason Shift 20 Inch Bike is a premium black BMX with a chromoly frame, flat seat, thick tires, and distinctive purple pedal cranks. The sleek Purple BMX bike boasts a chromoly frame with black handlebars, seat, and wheels. The frame showcases the "Wethepeople" brand and features hybrid equipment.
Wethepeople Reason Shift 20 Inch Bike

$1,299.99 AUD

Matte Black
Stealth Black
Matte Trans Purple
Matt Translucent Teal Raw Fade
Urban Grey
20.7520.85
Sold out
A black DK Swift Mini Bike with white lettering on the frame and black tires, positioned upright on a white background. This model features a lightweight aluminium frame. A teal and white SJK Swift Mini Bike positioned upright against a white background.
DK Swift Mini Bike
$599.99 AUD
Black/White
Teal
Black/White/Red
17.25
Sold out
DK Cygnus 24 Bike (2021) / Grey Zinc / 21.5TT
DK Cygnus 24 Bike (2021)

$669.99 AUD

Grey Zinc
21.5
The Cult Devotion 26 Inch Bike is a black single-speed BMX-style bicycle with a durable chromoly frame, straight handlebars, and thick tires, shown in a side view against a white background. The Cult Devotion 26 Inch Bike, featuring colorful handlebar grips and Vans waffle tyres, is displayed indoors against a geometric black and white wall.
Cult Devotion 26 Inch Bike
$1,299.99 AUD
Raw
Black
Rasta
2221
Save $15.00
The Raven Trickster 12 Inch Bike is a small black BMX-style kids' bike with training wheels, a padded seat, and thick tires—ideal for beginners. Pictured on a white background. The Raven Trickster 12 Inch Bike is a small blue beginner’s bike featuring training wheels, a BMX-style frame, black seat, and purple handlebars and pedals.
Raven Trickster 12 Inch Bike
From

$283.99 AUD

$298.99 AUD

Neon Coral
Phantom Teal
Blackout Sunrise
Solar Aqua
12
The Academy Entrant 20 Inch Bike is an entry-level beige BMX with black tires, seat, pedals, and handlebars. "ACADEMY" branding on the frame. Side view on a white background. Perfect for riders new to freestyle BMX. Beige Academy Entrant 20 Inch BMX bike with black handlebars, seat, and tires on a white background. "ACADEMY" is printed on the frame—perfect for beginners and fans of Academy bikes.
Academy Entrant 20 Inch Bike
$599.99 AUD
Black/Rainbow
Dark Grey/Polished
Gloss Black
Gloss Cream
Gloss Maroon
Matte Black
Matte Teal
Sand
19.520.2
Sold out
Wethepeople Reason 20 Inch BMX Bike - A high-performance ride for urban warriors, against a white background. A purple Wethepeople Reason 20 Inch BMX bike on a white background.
Wethepeople Reason 20 Inch BMX Bike

$1,089.99 AUD

Matte Blue
Trans Purple
Matt Translucent Teal Raw Fade
Matte Black
20.75
The Colony Horizon Alloy 12 Inch Balance Bike is shown from the side on a white background. It features a purple lightweight alloy frame, black seat, handlebars, and tires, with "COLONY" displayed on the frame. The Colony Horizon Alloy 12 Inch Balance Bike is a blue kids BMX with a lightweight alloy frame, black handlebars, seat, and tires. "COLONY" is displayed on the frame, pictured against a white background.
Colony Horizon Alloy 12 Inch Balance Bike

$399.99 AUD

Purple Ano
Clear Navy
Black Ano
Clear Polished
12
Sold out
A side view of the Kink Pump 14 Inch Bike (2026) showcases a small blue BMX with black handlebars, thick black tires, and a black seat. The Kink Pump 14 Inch Bike (2026), featuring a striking blue frame and thick black tires, is displayed against a textured gray brick wall on a smooth concrete floor—ideal for young adventurers seeking thrills.
Kink Pump 14 Inch Bike (2026)

$568.99 AUD

Digital Blue
14.5

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