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?
651 products
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Cult Control 20 Inch Bike (2022) / Raw / 20.75TT Cult Control 20 Inch Bike (2022) / Black / 20.75TT
Cult Control 20 Inch Bike
$1,099.99 AUD
Black
Raw
Matte Black
Matte Raw
20.75
Sold out
Wethepeople Audio 22 Bike / Matte Aqua Red / 21.9TT A Wethepeople Audio 22 Inch Bike featuring a red BMX style with black handlebar grips, black tires, and a durable chromoly frame.
Wethepeople Audio 22 Inch Bike

$1,599.99 AUD

Matte Aqua Red
Matte Black
21.9
Sold out
Sunday Primer Park 20 Bike (2022) / Gloss Black / 20.5TT
Sunday Primer Park 20 Inch Bike (2022)

$699.99 AUD

Gloss Black
20.5
Sold out
The Sunday Forecaster 20 Inch Bike (2022) / Alec Siemon features a green frame with a tan seat, black tires, and handlebars. Its 100% chromoly build prominently displays the "Sunday" brand name. This model also includes the Odyssey Clutch v2 Freecoaster for smooth riding. Close-up of a black bike stem with the brand name "Sunday" etched on it, connecting the handlebars. The Sunday Forecaster 20 Inch Bike (2022) / Alec Siemon's green frame and tires are also partially visible, boasting a 100% chromoly frame for durability.
Sunday Forecaster 20 Inch Bike (2022) / Alec Siemon

$999.99 AUD

Alec Siemon
20.75
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A Kink Whip XL 20 Inch Bike with a silver Chromoly frame, black handlebars, black seat, and thick black tires. The Kink Whip XL 20 Inch Bike, showcasing a durable Chromoly frame and Mission Mylar rims, stands out against a dark background with its black handlebars and thick tires.
Kink Whip XL 20 Inch Bike
$899.99 AUD
Slate Grey
21
Save $200.00
The Chase Edge Pro L Bike (2026) features a light blue BMX frame, black handlebars and wheels, with red accents, displayed from a front-side angle on a white background. The Chase Edge Pro XL Bike (2026) is a white and black BMX race bike featuring thick tires, a compact 6061 aluminium frame, straight handlebars, and a low seat, shown on a white background.
Chase Edge Pro XL Bike (2026)

$1,099.99 AUD

$1,299.99 AUD

Cement Grey
Slate Blue
21
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The Chase Edge Junior Bike (2026) is a light blue BMX race bike with black handlebars, wheels, and seat, shown on a white background. Its 6061 aluminum frame features "Chase Edge" branding plus red and black accents. The Chase Edge Junior Bike (2026) is a white and black BMX race bike with a lightweight 6061 aluminum frame, flat handlebars, thin tires, and a single gear, pictured from the front against a plain background.
Chase Edge Junior Bike (2026)

$1,199.99 AUD

Cement Grey
Slate Blue
18.75
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The Kink Whip XL 20 Inch Bike (2026) is a black BMX bike with a chromoly frame, thick tires, sturdy build, and handlebars—ideal for performing tricks with the precision of a Freecoaster hub. The 2026 Kink Whip XL 20 Inch BMX bike, crafted from durable 4130 Chromoly, is showcased against a textured gray wall in low lighting.
Kink Whip XL 20 Inch Bike (2026)

$948.99 AUD

Midnight Black
21
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The Kink Whip 20 Inch Bike (2026) boasts a durable chromoly frame, thick tires, straight handlebar, and pegs on both wheels against a plain white background. With sealed bearings for smooth rides, it's ideal for biking enthusiasts. A Kink Whip 20 Inch BMX bike, model 2026, with a freecoaster hub and thick tires, is parked against a textured gray brick wall.
Kink Whip 20 Inch Bike (2026)

$948.99 AUD

Midnight Black
20.5
Save $54.00
The Raven LC 20 Inch Bike is shown on a plain white background, featuring a black chromoly frame, thick tires, high handlebars, and a padded seat. The Raven LC 20 Inch Bike is a black BMX model with a logo on its Cro-Mo frame, equipped with wide tires, handlebars, a padded seat, and alloy double wall rims.
Raven LC 20 Inch Bike

$494.99 AUD

$548.99 AUD

Satin Black
Silver Austral
Satin Glow (Glow In The Dark)
Black/Oil Slick
Shadow Bronze
Silver Ghost
20.5
Save $200.00
Wethepeople 20 inch Envy Carbonic LTD Bike - Black Purple A Wethepeople 20 inch Envy Carbonic LTD Bike on a white background.
Wethepeople 20 inch Envy Carbonic LTD Bike
From

$2,799.99 AUD

$2,999.99 AUD

Matte Black
Black Purple
20.5 - Right Hand Drive21 - Right Hand Drive20.5 - Left Hand Drive21 - Left Hand Drive
A black Wethepeople Swampmaster 20 Inch Bike on a white background. The Wethepeople Swampmaster 20 Inch Bike, featuring BMX components, thick Maxxis tires, a black seat, and disc brakes, is shown in profile against a white background.
Wethepeople Swampmaster 20 Inch Bike

$3,299.99 AUD

Matte Black
Grey
21.5
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A sleek black BMX bike with thick tires, a padded seat, and a "Kink BMX" logo on the frame. Featuring a durable Chromoly frame, hand brakes, and a single gear setup, the Kink Gap XL 20 Inch Bike also boasts a 21” top tube for enhanced control and stability. The Kink Gap XL 20 Inch Bike features a sleek white frame, accented with a brown seat, black handlebars, and large black tires. Its 21” top tube and durable Chromoly frame make it both stylish and sturdy against a plain background.
Kink Gap XL 20 Inch Bike
$799.99 AUD
Midnight Black
Terrazzo White
21
The Sunday Dark Wave Authentic 20 Inch Bike, showcasing a dark frame, black handlebars, and black tires with 100% aftermarket parts from the Broc Raiford Signature line, is displayed against a plain white background. Close-up of the Sunday Dark Wave Authentic 20 Inch Bike’s black handlebars and seat, photographed from the front with a cement curb and gravel behind. This model features a 100% Chromoly frame for outstanding strength.
Sunday Dark Wave Authentic 20 Inch Bike

$2,699.99 AUD

Matte Midnight Purple
21 - RHD21.25 - LHD
Save $549.00
Redline RL20B Retro 20 Inch Bike / Red The Redline RL20B Retro 20 Inch Bike, showcasing a striking red 4130 Chromoly frame paired with a black seat and silver handlebars, features beige tires set against a crisp white backdrop.
Redline RL20B Retro 20 Inch Bike
$1,699.99 AUD
Red
21.5
Sold out
Kink Pump 14 Inch Bike (2023) / Gloss Digital Maroon / 14.5TT
Kink Pump 14 Inch Bike (2023)

$549.99 AUD

Gloss Digital Maroon
14.5
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The Kink Launch 20 Inch Bike (2026) in black, featuring thick tires, a padded seat, and a straight handlebar, is shown against a white background. The Kink Launch 20 Inch Bike (2026) comes in red with black tires and seat, featuring "KINK BMX" on the frame. Fitted with Mission parts, it's ideal for enthusiasts seeking style and performance.
Kink Launch 20 Inch Bike (2026)
$748.99 AUD
Trans Black
Mirror Red
Earth Bronze
20.25
Sold out
The Cult Access 20 Inch Bike, shown from the side against a white background, features a black frame with a straight top tube, thick tires, and flat pedals—making it an ideal BMX bike for beginners. The Cult Access 20 Inch Bike is ideal for beginners, featuring a sleek white BMX design with contrasting black handlebars, seat, and tires. Its durable hi-tensile frame can handle any terrain, all set against a plain white background for a modern look.
Cult Access 20 Inch Bike
$699.99 AUD
All Black
Matte White
Matte Raw
20
Save $300.00
Redline RL 275 27.5 Inch Bike (2023) / Blue / 27.5TT Redline RL 275 27.5 Inch Bike (2023) / Orange / 27.5TT
Redline RL 275 27.5 Inch Bike
From

$1,299.99 AUD

$1,599.99 AUD

Blue
Orange
22.2
Sold out
DK Sprinter Mini Bike / Smoke / 17.25TT
DK Sprinter Mini Bike

$799.99 AUD

Smoke
17.25
Sold out
DK Legend 26 Bike (2021) / Chrome / 22.4TT
DK Legend 26 Bike (2021)

$899.99 AUD

Chrome
22.4
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DK Sprinter Pro XL Bike / Smoke / 21TT
DK Sprinter Pro XL Bike

$999.99 AUD

Smoke
21
Save $11.00
The Raven Trickster Alloy 12 Inch Balance Bike is a black kids' bike with thick tires, sealed bearings for smooth rides, no pedals, and features colorful "Krusher" graphics on the frame and fork. The Raven Trickster Alloy 12 Inch Balance Bike features a lightweight purple alloy frame, black tires, turquoise handlebar grips, and "RAVEN" displayed on the side.
Raven Trickster Alloy 12 Inch Balance Bike

$187.99 AUD

$198.99 AUD

Blackout Sunrise
Violet Tide
Solar Aqua
12
Sold out
The DK Swift Micro 18 Inch Bike 2025 is a black BMX-style bicycle with a lightweight aluminum frame, horizontal top tube, slim tires, straight handlebars, and yellow and white accents, shown in profile view.
DK Swift Micro 18 Inch Bike 2025

$729.99 AUD

Black
16.25

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