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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The Meybo 2026 Superclass Pro XL Bike is a silver and black BMX racing bike with a compact frame, thick tires, and black handlebars, shown against a plain white background—ideal for tall riders. Side view of the Meybo 2026 Superclass Pro XL, a black and white BMX racing bike with a lightweight frame, flat handlebars, and single gear, designed for tall riders and built for race track speed.
Meybo 2026 Superclass Pro XL Bike

$2,499.99 AUD

Black/Grey/Purple
21
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A black and white Meybo 2026 Superclass Junior BMX bike with a lightweight frame, 22” top tube, flat handlebars, and thin tires is photographed on a white background. The Meybo 2026 Superclass Junior Bike is shown in black and white with a sleek frame, 22” top tube, flat handlebars, and thin tires, presented in a side view on a white background.
Meybo 2026 Superclass Junior Bike

$2,499.99 AUD

Black/Grey/Purple
18.7
The Fit Bike Co Misfit 14 Inch Bike is a teal and black BMX with thick tires, padded seat, and straight handlebars—ideal for young riders after a stylish youth bike. Shown in profile against a white background. The Fit Bike Co Misfit 14 Inch Bike for kids features a beige frame with black tires, a black seat, and "FITBIKECO" branding, shown from the side against a white background.
Fit Bike Co Misfit 14 Inch Bike

$899.99 AUD

Dark Jade Green
Peachy
14.25
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Side view of the Kink Launch LTD 20 Inch Bike, a limited edition BMX with a metallic frame, black saddle and handlebars, thick black tires, and precision sealed bearings. The Kink Launch LTD 20 Inch Bike is a limited edition BMX with a matte gray frame, black handlebars, seat, tires, and pedals, plus smooth sealed bearings. Shown against a dark brick wall background.
Kink Launch LTD 20 Inch Bike

$669.99 AUD

Concrete Camo
20.25
The colony-emerge-bike-2020 is displayed, featuring a red frame with black handlebars, seat, and wheels against a white background. Close-up of the handlebars and front section of the colony-emerge-bike-2020 BMX bicycle, with the "Colony" logo visible on the handlebars.
Colony Emerge / Clear Red

$999.99 AUD

Red
20.7
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The Fit Bike Co STR 20 Inch Bike (2026), seen in profile against a white background, features thick tires, a padded seat, and straight handlebars—ideal for modern street BMX riding. The Fit Bike Co STR 20 Inch Bike (2026) features a green frame, black tires, black seat, and straight handlebars, shown in profile on a white background—perfect for modern street riding.
Fit Bike Co STR 20 Inch Bike (2026)

$1,099.99 AUD

Army Green
Flat Black
20.520.75
Save $200.00
The Wethepeople Havoc 20 Inch Bike is a black BMX with a compact frame, trail geometry, thick tires, and "WeThePeople" branding on the top tube, shown from the side against a white background. Close-up of the Wethepeople Havoc 20 Inch Bike’s front wheel with black spokes, hub, and tire, visible "WT-PL LOGIC" rim branding, and a hydraulic disc brake for superior stopping power.
Wethepeople Havoc 20 Inch Bike

$2,099.99 AUD

$2,299.99 AUD

Gloss Black
21.35
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The Kink Williams 20 Inch Bike (2026) is a purple BMX with full Chromoly construction, a black seat, handlebars, and pedals, showcased on a white background. The Kink Williams 20 Inch Bike (2026), featuring a purple frame, black handlebars, and black tires, is set against a gray brick wall backdrop.
Kink Williams 20 Inch Bike (2026)

$1,699.99 AUD

Translucent Purple
21
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The Inspyre Neo Micro Bike is a blue BMX race bike with a sleek frame, two black wheels featuring durable aluminium rims, and standard handlebars, making it perfect for entry-level racing enthusiasts. The Inspyre Neo Micro Bike is a blue BMX race bike equipped with black handlebars, two wheels, and a chain-driven pedal system. It features lightweight aluminum rims, making it perfect for entry-level riders.
Inspyre Neo Micro Bike

$959.99 AUD

Blue Polish
15.75
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The Inspyre Evo-C Disc Junior Bike 2025, featuring black handlebars, a sleek black seat, and sturdy black tires, is showcased against a white background, embodying the spirit of BMX racing. The Inspyre Evo-C Disc Junior Bike 2025 is a silver BMX bike with black handlebars and wheels, featuring "Inspire" branding on the frame—ideal for BMX racing enthusiasts.
Inspyre Evo-C Disc Junior Bike 2025

$2,099.99 AUD

Champagne
18.75
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The Inspyre Evo-C Disc Pro Cruiser Bike 2025 sports a sleek black seat and handlebars with "Inspyre EVO" on its silver frame, equipped with Shimano hydraulic disc brakes for top-notch performance. The Inspyre Evo-C Disc Junior Bike 2025 is a silver BMX bike with black handlebars and wheels, featuring "Inspire" branding on the frame—ideal for BMX racing enthusiasts.
Inspyre Evo-C Disc Pro Cruiser Bike 2025

$2,099.99 AUD

Champagne
21.85
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Introducing the Fly Bikes Proton CST 20 Inch Bike, a sleek red BMX equipped with black handlebars, tires, and pedals. It features a durable CrMo frame and robust tires designed for tricks and stunts. Enjoy its smooth performance thanks to reliable sealed hubs. The Fly Bikes Proton CST 20 Inch Bike showcases a sleek design when viewed at an angle, featuring a black CrMo frame, high-rise handlebar, large tires, and sealed hubs.
Fly Bikes Proton CST 20 Inch Bike

$1,099.99 AUD

Flat Red
Gloss Black
Right Hand Drive - 21Left Hand Drive - 21
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The Meybo 2025 Superclass Pro XXL BMX bike features a sleek silver and black frame with eye-catching orange graphics, black wheels, and handlebars. Ideal for freestyle or stunt riding, it offers optimal control with Shimano hydraulic disc brakes.
Meybo 2025 Superclass Pro XXL Bike

$2,239.99 AUD

Grey/Orange
22
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The Meybo 2025 Clipper Pro Cruiser Bike features a striking purple and black frame with large tires and a compact seat. Perfect for entry-level racing, it ensures smooth stops with its advanced hydraulic disc brakes. The Meybo 2025 Clipper Pro Cruiser Bike is a striking red BMX ideal for entry-level racers, featuring a black saddle, handlebars, and tires set against a white backdrop.
Meybo 2025 Clipper Pro Cruiser Bike

$1,499.99 AUD

Purple/Navy
Red/Maroon
22.25
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The Meybo 2025 Clipper Expert Bike is an entry-level race bike featuring a striking purple-to-black gradient frame, with "MEYBO" branding. It has sleek black handlebars, seat, wheels, and tires for a seamless look combining style and performance. The Meybo 2025 Clipper Expert Bike, in striking red and black, showcases a sleek frame, robust tires, and "MEYBO" on the side. Ideal for entry-level racers, it offers a flat seat and straight handlebars for dependable performance to kickstart your racing journey.
Meybo 2025 Clipper Expert Bike

$1,499.99 AUD

Purple/Navy
Red/Maroon
19.7
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A Chase Element Pro Cruiser Bike featuring an Expert XL frame, lightweight design, knobby tires, and a single-gear drivetrain in a striking combination of red and black. The Chase Element Pro Cruiser Bike features a sleek black design, narrow tires, an Expert XL frame, Ikon carbon forks, front and rear brakes, and a straight handlebar.
Chase Element Pro Cruiser Bike

$2,198.99 AUD

Black/Grey
Wine/Sand
21.5
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The Radio Raceline Quartz Pro L Bike 2025 is a black BMX bike featuring a sleek, lightweight hydro-formed frame, single gear, flat handlebars, and 20-inch wheels. Its streamlined design is showcased against a white background. The Radio Raceline Quartz Pro L Bike 2025 is a black BMX bike featuring a sturdy, lightweight hydro-formed frame, thick tires, and high handlebars. The frame proudly displays the Radio Raceline Quartz Pro L logo. This bike comes with a single gear and no additional accessories.
Radio Raceline Quartz Pro L Bike 2025

$2,599.99 AUD

Matte Black
20.9
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A black Radio 26 Inch Legion Bike with thick tires and the brand name "RADIOBIKECO" emblazoned on the frame and tires, featuring wheelie specific geometry, stands on a white background. A black Radio 26 Inch Legion Bike with "RADIOBIKECO" written on the tires. The bike features a sleek frame, wide handlebars, knobby tires for off-road use, and Tektro disc brakes for superior stopping power.
Radio 26 Inch Legion Bike

$1,299.99 AUD

Cosmic Splatter
22
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A white Chase Edge Pro XL bike on a white background. A blue Chase Edge Pro XL Bike (2024) on a white background.
Chase Edge Pro XL Bike (2024)
$1,268.99 AUD
Cement
Slate
21
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A white and black Chase Edge Expert XL Bike (2024) on a white background. A Chase Edge Expert XL Bike (2024) from the complete race bikes Chase Edge range, set against a clean white background.
Chase Edge Expert XL Bike (2024)

$1,248.99 AUD

Cement
Slate
20
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A Chase Edge Pro L Bike (2024) from the Chase Edge range on a white background. A white Chase Edge Pro L Bike (2024) on a white background.
Chase Edge Pro L Bike (2024)

$1,248.99 AUD

Cement
Slate
20.5
Save $260.00
A yellow BMX bike on a white background with the Inspyre EVO-C Expert XL Disc Brake Bike. An Inspyre EVO-C Expert XL Disc Brake Bike, equipped with disc brakes and a carbon fork, showcased on a white background.
Inspyre EVO-C Expert XL Disc Brake Bike

$1,734.99 AUD

$1,994.99 AUD

Mystic Honey Gold Chrome
20.25
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A DK Aura 16 Inch Bike on a white background.
DK Aura 16 Inch Bike

$569.99 AUD

Silver
16
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Inspyre EVO-C Pro L Disc Brake Bike (2022) / Grey / 20.75TT Inspyre EVO-C Pro L Disc Brake Bike (2022) / white / 20.75TT
Inspyre EVO-C Pro L Disc Brake Bike

$1,999.99 AUD

White
20.75

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