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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A vibrant orange BSD ALVX AF+ Custom 20 Inch Bike, featuring aftermarket parts, is showcased against a clean white background. An orange BSD ALVX AF+ Custom 20 Inch Bike with aftermarket parts on a white background.
BSD ALVX AF+ Custom 20 Inch Bike

$2,159.99 AUD

Coral
21
Save $260.00
An Inspyre EVO-C Pro L Disc Brake Bike with disc brakes on a white background. A yellow Inspyre EVO-C Pro L Disc Brake Bike with a carbon fork on a white background.
Inspyre EVO-C Pro L Disc Brake Bike

$1,734.99 AUD

$1,994.99 AUD

Mystic Honey Gold Chrome
20.75
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The Colony Sweet Tooth Pro Elite 16 Inch Bike features a sleek black frame adorned with distinctive "Colony" and "Sweet Tooth Pro" decals, complemented by thick tires and a padded seat, ideal for thrilling rides. Close-up of a black BMX handlebar with a brake lever and colorful decals, highlighting the sleek design of the Colony Sweet Tooth Pro Elite 16 Inch Bike.
Colony Sweet Tooth Pro Elite 16 Inch Bike

$2,499.99 AUD

ED Black
16
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Radio Zuma 24 Inch Bike - supplier product photo Radio Zuma 24 Inch Bike - detail 1
Radio Zuma 24 Inch Bike

$1,099.99 AUD

Teal
19.3
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A GT Speed Series Junior Bike on a white background.
GT Speed Series Junior Bike

$1,099.99 AUD

Black
18.5
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An Inspyre Evo Disc Pro XL Bike race bike from the EVO range, standing on a white background. An Inspyre Evo Disc Pro XL Bike on a white background.
Inspyre Evo Disc Pro XL Bike

$1,499.99 AUD

Blue Polish
21.25
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Inspyre EVO-C Expert XL Disc Brake Bike (2022) / Grey / 20.25TT Inspyre EVO-C Expert XL Disc Brake Bike (2022) / white / 20.25TT
Inspyre EVO-C Expert XL Disc Brake Bike

$1,999.99 AUD

White
20.25
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The Sunday Wave Length 20 Inch (Gary Young) Bike showcases a matte olive green chromoly frame with black Odyssey handlebars, saddle, and wheels, set against a white background. Close-up of a Sunday Wave Length 20 Inch (Gary Young) bike's front headset and stem with an FSA logo. The matte olive green chromoly frame features a visible toptube, highlighted by premium Odyssey parts.
Sunday Wave Length 20 Inch (Gary Young) Bike

$2,499.99 AUD

Matte Army Green
21
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Redline Proline Expert (2023) / Black / 19.5 TT
Redline Proline Expert Bike

$1,099.99 AUD

Black
19.5
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Redline MX Junior (2023) / Black / 18.5TT A black BMX bike with neon green accents, equipped with thick tires, wide handlebars, and a comfortable seat. The Redline MX Junior Bike features an aluminum frame designed for freestyle riding and BMX racing.
Redline MX Junior Bike

$899.99 AUD

Black
18.5
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Inspyre EVO Pro XL Disc Brake Bike / Grey / 21.25TT
Inspyre EVO Pro XL Disc Brake Bike

$1,302.99 AUD

Grey
21.25
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Inspyre EVO Expert XL Disc Brake Bike / Grey / 20.25TT
Inspyre EVO Expert XL Disc Brake Bike

$1,302.99 AUD

Grey
20.25
The Fit Misfit 12 Inch Balance Bike is a small black BMX-style kids' balance bike with brown seat, handle grips, and tires, shown against a plain white background. The Fit Misfit 12 Inch Balance Bike is a small red BMX balance bike with a sturdy TIG welded steel frame, black tires, and tan seat and handlebar grips, shown in profile on a white background.
Fit Misfit 12 Inch Balance Bike
$499.99 AUD
Gloss Black
Tiki Red
12
Colony Prody Pro 20 Inch Bike / Black/Chrome / 20.6TT Close-up view of the Colony Prody Pro 20 Inch Bike’s black limited edition frame, featuring the seat, rear tire, chain, and part of the drivetrain against a white background.
Colony Prody Pro 20 Inch Bike

$1,499.99 AUD

Black/Chrome
20.6
New
A limited edition ION BMX TiXXII Custom Titanium 22 Inch Bike with a silver titanium frame and black handlebars, seat, pedals, and tires is shown on a white background. Close-up of the ION BMX TiXXII Custom Titanium 22 Inch Bike’s frame, showing the rear wheel, chain, crankset, seat, and part of the pedal against a white background.
ION BMX TiXXII Custom Titanium 22 Inch Bike

$7,499.99 AUD

Titanium
22
New
WPBK265-26-BLK WPBK265-26-GRY
Wethepeople The Swampmaster 20 Inch Bike

$3,499.99 AUD

Matt Black
Matt Swamp Grey
21.5
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Pictured on a white background is the Chase Element Expert Race Bike (2027), a pro-level BMX bicycle featuring a blue and purple 7005 T6 alloy frame, black handlebars, and black wheels. A Chase Element Expert Race Bike (2027) in blue and purple, featuring a 7005 T6 alloy frame, black tires, black handlebars, and a black seat, viewed from the back left side against a white background.
Chase Element Pro XXL Race Bike (2027)

$2,299.99 AUD

Grey/Light Grey
Purple/Light Blue
21.5 - Right Hand Drive
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Pictured on a white background is the Chase Element Expert Race Bike (2027), a pro-level BMX bicycle featuring a blue and purple 7005 T6 alloy frame, black handlebars, and black wheels. A Chase Element Expert Race Bike (2027) in blue and purple, featuring a 7005 T6 alloy frame, black tires, black handlebars, and a black seat, viewed from the back left side against a white background.
Chase Element Pro Cruiser Race Bikes (2027)

$2,299.99 AUD

Grey/Light Grey
Purple/Light Blue
21.5 - Right Hand Drive22 - Right Hand Drive
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A gray and black Chase Element Expert Race Bike (2027) with thin tires, straight handlebars, and “CHASE” branding on the frame, crafted from a lightweight 7005 T6 alloy for enhanced durability and performance. This pro-level BMX bike—part of the acclaimed Chase Element lineup—is shown on a white background. A rear left view of the Chase Element Expert Race Bike (2027), a pro-level BMX featuring a lightweight 7005 T6 alloy frame, flat seat, and knobby tires in a striking black and white color scheme—drawing inspiration from the renowned Chase Element series.
Chase Element Pro XXXL Race Bike (2027)

$2,299.99 AUD

Grey/Light Grey
Purple/Light Blue
22 - Right Hand Drive
Sold out
Pictured on a white background is the Chase Element Expert Race Bike (2027), a pro-level BMX bicycle featuring a blue and purple 7005 T6 alloy frame, black handlebars, and black wheels. A Chase Element Expert Race Bike (2027) in blue and purple, featuring a 7005 T6 alloy frame, black tires, black handlebars, and a black seat, viewed from the back left side against a white background.
Chase Element Pro Race Bike (2027)

$2,299.99 AUD

Grey/Light Grey
Purple/Light Blue
20.5 - Right Hand Drive
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Chase Edge Pro Cruiser CF Race Bike (2027) in blue, featuring black handlebars, seat, and wheels, with a carbon fork; shown from a front-side angle against a white background. A yellow Chase Edge Pro Cruiser CF Race Bike (2027) is shown from a front-side angle on a white background, featuring black tires, black handlebars, and “CHASE” branding on the frame. This BMX race bike includes a lightweight carbon fork for enhanced performance.
Chase Edge Pro Cruiser CF Race Bike (2027)

$1,799.99 AUD

Dark Midnight
Gold Sand/Dark Grey
21.5 - Right Hand Drive
Sold out
A gray and black Chase Element Expert Race Bike (2027) with thin tires, straight handlebars, and “CHASE” branding on the frame, crafted from a lightweight 7005 T6 alloy for enhanced durability and performance. This pro-level BMX bike—part of the acclaimed Chase Element lineup—is shown on a white background. A rear left view of the Chase Element Expert Race Bike (2027), a pro-level BMX featuring a lightweight 7005 T6 alloy frame, flat seat, and knobby tires in a striking black and white color scheme—drawing inspiration from the renowned Chase Element series.
Chase Element Pro XL Race Bike (2027)

$2,299.99 AUD

Grey/Light Grey
Purple/Light Blue
21 - Right Hand Drive
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A Chase Edge Pro CF Race Bike (2027) in beige and black, featuring a sturdy aluminium frame, thick tires, and straight handlebars, displayed from a front side angle on a white background. The Chase Edge Pro CF Race Bike (2027) is a blue and black BMX race bike featuring a straight top tube, thick tires, front and rear disc brakes, and “CHASE” branding on its aluminium frame and fork, photographed against a white background.
Chase Edge Pro CF Race Bike (2027)

$1,799.99 AUD

Dark Midnight
Gold Sand/Dark Grey
20.5 - Right Hand Drive
Sold out
A Chase Edge Pro XXL CF Race Bike (2027) in beige, featuring black handlebars, a lightweight carbon fork, black wheels, and bold “CHASE” branding on the frame, displayed against a white background. The Chase Edge Pro XXL CF Race Bike (2027) is displayed on a white background, showcasing its blue and black color scheme, lightweight frame, wide handlebars, thick tires, and a carbon fork designed for enhanced performance.
Chase Edge Pro XXL CF Race Bike (2027)

$1,799.99 AUD

Dark Midnight
Gold Sand/Dark Grey
21.5 - Right Hand Drive

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