SUBK252-26-GLD
SUBK252-26-GLD
SUBK252
SUBK252
SUBK252
SUBK252
SUBK252
SUBK252
SUBK252
SUBK252
SUBK252
SUBK252
SUBK252
SUBK252
SUBK252
SUBK252
SUBK252

Description
OOOOOH Yeah. Gaz and Sunday have teamed up to create another masterpiece this year! This bike is loaded up with the absolute best of the best parts from Sunday and Odyssey and will leave you salivating! This bike is built for people who want quality and strength, without the massive price tag. 

Features
  • Gary Young's signature frame. The Wavelength is a 21" TT, 100% chromoly aftermarket frame with removable brake hardware: the one Gary puts his name on.
  • Switchable either side. Odyssey Calibur V2 cranks and a switchable rear cassette hub let you run right-hand or left-hand drive.
  • Odyssey Evo 2.5 brakes. Evo 2.5 brakes with an Odyssey monolever and Linear Quik Slic cable keep the braking simple and tidy.
  • Loaded with aftermarket parts. Sunday Darkwave 41-thermal forks, Odyssey Super Highway bars, a sealed Vandero Pro front hub and Hazard Lite rims run right through it.
  • Odyssey Aitken Street tyres. Aitken Street tyres on 36H Hazard Lite rims give you a wheelset and rubber built for street riding.

Specifications
  • Size: 20"
  • Frame: Sunday Wavelength, 21" TT, 100% chromoly aftermarket, removable brake hardware
  • Top tube: 21"
  • Fork: Sunday Darkwave, 20", 100% chromoly, 41-thermal aftermarket, 28mm offset
  • Headset: FSA integrated conical, 1-1/8", with Sunday aftermarket aluminium cap
  • Stem: Sunday Freeze top load, 48mm
  • Bars: Odyssey Super Highway, 41-thermal aftermarket bar
  • Grips: Odyssey
  • Brakes: Odyssey Evo 2.5
  • Brake lever: Odyssey monolever, Odyssey Linear Quik Slic cable
  • Cranks: Odyssey Calibur V2, 170mm, 100% chromoly, RHD/LHD compatible
  • Bottom bracket: Sealed, mid, 22mm
  • Sprocket: Odyssey BOYD, 25T
  • Pedals: Odyssey Twisted PC Pro
  • Front hub: Odyssey Vandero Pro, 36H, sealed, 3/8" female axle, 2 plastic guards
  • Rear hub: Switchable cassette hub
  • Rims: Odyssey Hazard Lite, 20", 36H
  • Tyres: Odyssey Aitken Street
  • Seat: Odyssey Slugger stitch, pivotal
  • Seat post: Odyssey pivotal
  • Seat clamp: Sunday aftermarket

Assembly information

Your bike ships mostly assembled in the box. Finishing it takes most people 10 to 20 minutes with basic tools, and the video above walks through every step.

  • Fit the handlebars and line them up with the front wheel
  • Fit the front wheel, pedals and seat post
  • Check the brakes and tyre pressure before the first ride

Tools: Allen key set and a 15mm, 17mm or 19mm spanner for the pedals and axle nuts (bikes can vary between these three sizes). A socket is needed if installing pegs.

Rather have it done? Ask us about extra assembly before you order, or any local bike shop can finish the build for a small fee.

Sunday Wavelength 20 Inch Bike (2026) / Gary Young Signature

Brand: Sunday SKU:

From

$2,499.99 AUD

 $2,500.99 AUD

Or 4 payments of $624.99 AUD with

Colour - Matt Metallic Gold

Top Tube Length - 21

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.

How to measure

Stand your rider against a wall in the shoes they ride in, heels flat, and mark the top of their head. Measure from the floor to the mark.

Top tube is measured from the centre of the seat tube to the centre of the head tube, so it is not the same as the length of the tube you can see.

  • A 20 inch bike is the standard adult BMX and most riders end up there, so do not size a tall child down to a smaller wheel.
  • 22, 24 and 26 inch bikes are adult bikes with a bigger wheel, not bigger frames for taller riders.
  • Size up for stability through trails and transitions. Size down if you want the bike quick and twitchy for spins and grinds.
  • Top tube is fixed, but stem length, fork offset and bar position all shift how roomy the bike feels once you are on it.

Not sure? Send us their height and we will tell you what we would put them on.

Read the full buying guide

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.

How to measure

Stand your rider against a wall in the shoes they ride in, heels flat, and mark the top of their head. Measure from the floor to the mark.

Top tube is measured from the centre of the seat tube to the centre of the head tube, so it is not the same as the length of the tube you can see.

  • A 20 inch bike is the standard adult BMX and most riders end up there, so do not size a tall child down to a smaller wheel.
  • 22, 24 and 26 inch bikes are adult bikes with a bigger wheel, not bigger frames for taller riders.
  • Size up for stability through trails and transitions. Size down if you want the bike quick and twitchy for spins and grinds.
  • Top tube is fixed, but stem length, fork offset and bar position all shift how roomy the bike feels once you are on it.

Not sure? Send us their height and we will tell you what we would put them on.

Read the full buying guide
$2,499.99 AUD

Price match request

Sunday Wavelength 20 Inch Bike (2026) / Gary Young Signature - Matt Metallic Gold / 21

Metro bike shipping from $59.99

Regional and remote rates may differ

Free in-store pickup - Brisbane

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