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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The Colony Sweet Tooth Pro Elite 18 Inch BMX Bike features a black frame with teal accents, compact dimensions, thick tires, and a padded seat, highlighted against a pristine white background.
Close-up of a Colony Sweet Tooth Pro Elite 18 Inch BMX bike, displaying its black frame with teal and white decals, highlighting the handlebars, grips, and seat.
Close-up of a Colony Sweet Tooth Pro Elite 18-Inch BMX bike's rear wheel, highlighting the brake mechanism and chain against a crisp white background.
Close-up of a black chainring and pedal crank on the Colony Sweet Tooth Pro Elite 18 Inch BMX Bike, featuring a decorative frame design.
Close-up of a Colony Sweet Tooth Pro Elite 18 Inch BMX bike in black, highlighting the front wheel and fork, featuring the iconic Colony BMX logo and a tire rated at 65 PSI max.
Close-up of a BMX bike wheel highlighting the spokes, hub, and a black fork featuring vibrant "Colony Sweet Tooth Pro Elite 18 Inch" branding.
Close-up of the black handlebar with textured grip on a Colony Sweet Tooth Pro Elite 18 Inch BMX Bike, showcasing its frame with blue and orange decals.
Close-up of a black pedal on a crank arm, with tire tread visible, showcasing the sleek design of the Colony Sweet Tooth Pro Elite 18 Inch BMX Bike.
Close-up of a BMX bike's rear wheel, showcasing the hub, spokes, and frame side view. Could be a Colony Sweet Tooth Pro Elite 18 Inch BMX Bike, famed for precision-crafted components and durability.
Close-up of a black textured bicycle seat with the Colony BMX logo on the seat post, enhancing both comfort and style for your Colony Sweet Tooth Pro Elite 18 Inch BMX Bike rides.
Close-up of a textured black bicycle seat with an embossed logo, attached to the sleek frame of a Colony Sweet Tooth Pro Elite 18 Inch BMX Bike.
Close-up of a Colony Sweet Tooth Pro Elite 18 Inch BMX bike's chain and sprocket on a black frame, highlighting the intricate mechanics and streamlined design typical of Colony BMX craftsmanship.
Close-up of the black handlebar stem on a Colony Sweet Tooth Pro Elite 18 Inch BMX Bike, highlighted by colorful accents and an engraved logo.
Close-up of a black Colony Sweet Tooth Pro Elite 18-Inch BMX bike frame with a colorful "Colony BMX" decal, displaying handlebars, stem, and part of the front fork.
Close-up of a Colony Sweet Tooth Pro Elite 18 Inch BMX tire with a textured tread and visible spokes. Marked "65 PSI MAX," the tire rests against a blurred background suggesting motion and adventure.
Colony Sweet Tooth Pro Elite 18 Inch BMX Bike

$2,199.99 AUD

ED Black
18
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An Inspyre Evo Disc Pro Cruiser Bike on a white background.
An Inspyre Evo Disc Pro Cruiser Bike on a white background.
An Inspyre Evo Disc Pro Cruiser bike on a white background.
A close up of a blue handlebar on an Inspyre Evo Disc Pro Cruiser Bike.
An Inspyre Evo Disc Pro Cruiser Bike is shown against a white background.
A close up of the Inspyre Evo Disc Pro Cruiser Bike with a chain.
A close up of the Inspyre Evo Disc Pro Cruiser Bike with a disc brake.
Inspyre Evo Disc Pro Cruiser Bike

$1,499.99 AUD

Blue Polish
21.85
Save $205.00
A blue Inspyre Evo Disc Pro L Bike on a white background.
A blue Inspyre Evo Disc Pro L Bike race bike on a white background.
An Inspyre Evo Disc Pro L Bike from the EVO range, set against a white background.
A close-up of a blue handlebar on an Inspyre Evo Disc Pro L Bike.
An Inspyre Evo Disc Pro L Bike from the EVO range is shown against a white background.
A close up of an Inspyre Evo Disc Pro L Bike with a chain.
A close up of a blue Inspyre Evo Disc Pro L bike with a disc brake.
Inspyre Evo Disc Pro L Bike

$1,294.99 AUD

$1,499.99 AUD

Blue Polish
20.75
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Subrosa Tiro XL 20 Inch Bike (2021) / Black
Subrosa Tiro XL 20 Inch Bike (2021)

$989.99 AUD

Black
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Haro Lineage Sport Freestyler Bashguard 20 Bike / Black/ 21TT
Product Description: A sleek Haro Lineage Sport Freestyler Bashguard 20 Bike resting gracefully on a polished wooden floor.
Haro Lineage Sport Freestyler Bashguard 20 Bike
A detailed shot of a Haro Lineage Sport Freestyler Bashguard 20 Bike wheel.
A detailed image of a Haro Lineage Sport Freestyler Bashguard 20 Bike gear.
A detailed shot of a Haro Lineage Sport Freestyler Bashguard 20 Bike tire.
A close up of a Haro Lineage Sport Freestyler Bashguard 20 Bike with a black seat.
A detailed view of the Haro Lineage Sport Freestyler Bashguard 20 Bike handlebars.
A close up of a Haro Lineage Sport Freestyler Bashguard 20 Bike with yellow handlebars.
Haro Lineage Sport Freestyler Bashguard 20 Bike

$2,699.99 AUD

Black
21
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A Cult Vick Behm Custom Race Bike with a CrMo race frame is shown against a white background.
A close up of a Cult Vick Behm Custom Race Bike with a label on it.
A close up of the handlebars of a Cult Vick Behm Custom Race Bike.
A close up of a black Cult Vick Behm Custom Race Bike wheel featuring Spectre NME carbon rims.
A close up of the handlebar on a Cult Vick Behm Custom Race Bike, showcasing its performance and style.
A close up of a Cult Vick Behm Custom Race Bike with a bottle mounted on the stylish handlebar.
A close up of a handlebar on a Cult Vick Behm Custom Race Bike.
A custom Cult Vick Behm Custom Race Bike with a chain on it, designed for performance and style.
A close up of a Cult Vick Behm Custom Race Bike.
A close up of a Cult Vick Behm Custom Race Bike chain with the word tangent on it.
A close up image of the Cult Vick Behm Custom Race Bike pedal.
A close up of a Cult Vick Behm Custom Race Bike with a chain on it.
A close up of the Cult Vick Behm Custom Race Bike's brakes.
A Cult Vick Behm Custom Race Bike with a tire attached, showcasing exceptional performance.
A close up of a Cult Vick Behm Custom Race Bike tire with the word powerblock on it, featuring Spectre NME carbon rims.
A high-performance Cult Vick Behm Custom Race Bike with a race frame, featuring a close-up of the chain.
Cult Vick Behm Custom Race Bike

$2,499.99 AUD

Raw/Black
21.5
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Chase Element Pro L (2022) / Teal / 20.50TT
Chase Element Pro L (2022)

$1,699.99 AUD

Slate
20.5
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An entry level race bike, the Meybo 2024 Clipper Pro 22, showcased on a white background.
An entry level race bike, the white Meybo 2024 Clipper Pro 22, showcased against a white background.
Meybo 2024 Clipper Pro 22

$999.99 AUD

Matte Grey/Matte Black/Matte Dark Grey
22
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Wethepeople Paradox Custom 20 Inch Bike / Abyss Green / 21TT
Wethepeople Paradox Custom 20 Inch Bike

$3,338.75 AUD

Abyss Green
21
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United Supreme Bike / Ribble Turquoise / 20.75TT
United Supreme 20 Inch Bike

$724.99 AUD

Ribble Turquoise
20.75
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United Recruit Jr Bike / Quiet Wave Green / 20TT
United Recruit Jr 20 Inch Bike

$634.99 AUD

Quiet Wave Green
20
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United Recruit Jr Bike / Volvo Blue / 18.5TT
United Recruit Jr 18 Inch Bike

$634.99 AUD

Volvo Blue
18.5
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Terrible One Barcode Joe Rich Custom Bike (2004)
Terrible One Barcode Joe Rich Custom 20 Inch Bike (2004)

$3,999.99 AUD

Joe Rich Green/Blue
21
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Tall Order Flair Park Bike / Gloss Wolf Grey With Black Parts / 20.4TT
Tall Order Flair Park 20 Inch Bike

$859.99 AUD

Gloss Wolf Grey With Black Parts
20.4
The Sunday Sound Wave Special 20 Inch Bike (2023) is a black Chromoly BMX with thick tires, a straight top tube, orange "SUNDAY" on the frame, premium Odyssey parts, and is pictured on a white background.
The Sunday Sound Wave Special 20 Inch Bike (2023), a black chromoly BMX with special branding, is shown indoors against corrugated metal. Key features and Odyssey parts are highlighted beside the bike.
A Sunday Sound Wave Special 20 Inch Bike (2023) with thick tires and a padded seat is parked on an asphalt surface in an empty parking lot.
A Sunday Sound Wave Special 20 Inch Bike (2023) with thick tires, Odyssey parts, and a brown seat stands upright on an asphalt surface in a residential area.
Front view of a black Sunday Sound Wave Special 20 Inch Bike (2023), parked on pavement, showcasing its handlebars, front tire, Odyssey parts, and pedals.
Close-up of a black Sunday Sound Wave Special 20 Inch Bike (2023), showing the rear wheel, chain, pedals, and part of the frame with "Sunday" branding, parked on a street.
Close-up of the Sunday Sound Wave Special 20 Inch Bike (2023), featuring detailed spokes and axle against textured asphalt—a top pick for BMX enthusiasts.
Close-up of the black stem on the Sunday Sound Wave Special 20 Inch Bike (2023), with "SUNDAY" engraved on top and "SUNDAY BIKES" printed around the center bolt, featuring quality Odyssey parts.
Close-up of a Sunday Sound Wave Special 20 Inch Bike (2023) front wheel with an Odyssey tire featuring "100 PSI MAX" and "R-GRIP" markings, parked outdoors on a sunny day—ideal for top-tier BMX riding.
Close-up of a Sunday Sound Wave Special 20 Inch Bike (2023) frame with a "100% Chromoly Frame • Fork • Handlebar" sticker in black text on metallic, highlighting its high quality and genuine Odyssey components.
Close-up of a black padded bicycle seat with a textured pattern, mounted on a Sunday Sound Wave Special 20 Inch Bike (2023) featuring a black Chromoly frame and partially visible tire.
Close-up of a textured black ODI handlebar grip on the Sunday Sound Wave Special 20 Inch Bike (2023), with part of its Chromoly BMX frame and pavement visible in the background.
Close-up of a black Sunday Sound Wave Special 20 Inch Bike (2023) BMX, showing the "SOUNDWAVE" frame label, rear wheel, pedal, Odyssey components, part of the headset with a red logo, and pavement background.
A black bicycle pedal on a black metal pole, designed for the Sunday Sound Wave Special 20 Inch Bike (2023), and compatible with Odyssey BMX parts.
Close-up of a Sunday Sound Wave Special 20 Inch Bike (2023) rear wheel hub, showcasing Odyssey parts, with spokes, chain, and logo details set against a blurred asphalt background.
Sunday Sound Wave Special 20 Inch Bike (2023)

$2,499.99 AUD

Rust Proof Black
Left Hand Drive - 21Right Hand Drive - 21
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Sunday Forecaster Aaron Ross 20 Inch Bike (2023) / Gloss White / 20.5TT
Sunday Forecaster Aaron Ross 20 Inch Bike (2023)

$1,099.99 AUD

Gloss White
20.5
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Subrosa Sono 20 Inch Bike (2022) / Black / 20.5TT
Subrosa Sono 20 Inch Bike (2022) / Granite Grey / 20.5TT
Subrosa Sono 20 Inch Bike (2022)

$869.99 AUD

Black
Granite Grey
20.5
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Subrosa Salvador FC 20 Inch Bike (2022) / Matte Trans Blue / 21TT
Subrosa Salvador FC 20 Inch Bike (2022)

$999.99 AUD

Matte Trans Blue
21
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Subrosa Novus Simo 10 / 20 Inch Bike (2022) / Gloss Trans Black / 21TT
Subrosa Novus Simo 10 / 20 Inch Bike (2022)

$2,199.99 AUD

Gloss Trans Black
21
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Subrosa Altus 20 Inch Bike (2022) / Black / 20TT
Subrosa Altus 20 Inch Bike (2022)

$839.99 AUD

Black
20
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Subrosa Altus 14 Inch Bike (2022) / Army Green
Subrosa Altus 14 Inch Bike

$749.99 AUD

Army Green
14.5
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Redline RL20B Tuff Retro 20 Inch Bike
Redline RL20B Tuff Retro 20 Inch Bike

$1,999.99 AUD

Green
21.5
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Redline MX Pro 20 (2023) / Black / 20.25TT
Redline MX Pro 20 Bike

$999.99 AUD

Black
20.25
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Redline MX Expert XL (2023) / Black / 20TT
Redline MX Expert XL Bike

$899.99 AUD

Black
20

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