SUBK250-26-BLU
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Description

They call this bike special and we agree. The Soundwave Special is a dialled 20 inch complete built from 100% aftermarket parts, with a Sunday Soundwave v3 frame, Darkwave fork, Odyssey Super Highway bars and Odyssey Thunderbolt+ cranks all covered by Sunday's 41-Thermal lifetime warranty.

From there it is a long list of Odyssey: Utility Pro sprocket, Hazard Lite rims, Path Pro tyres, Springfield U-brake and a Monolever, with a Sunday Freeze top load stem and an Odyssey Slugger pivotal seat. It can be built right-hand or left-hand drive, so it suits whichever way you spin.

Features
  • Lifetime warranty on the core. The 41-Thermal lifetime warranty covers the Soundwave v3 frame, Darkwave fork, Super Highway bars and Thunderbolt+ cranks.
  • 100% aftermarket parts kit. Every part is a genuine aftermarket part, which is why Sunday reckon this build has no equals.
  • Hazard Lite rims, Path Pro tyres. Odyssey Hazard Lite rims wrapped in Odyssey Path Pro tyres: the wheels and rubber riders buy separately anyway.
  • Right or left hand drive. The Soundwave Special comes right-hand or left-hand drive, so you can run it the way you already ride.
  • Sunday Soundwave v3 chromoly frame. A 21" top tube frame in 100% chromoly with removable brake hardware, so you can strip it brakeless later.

Specifications
  • Size: 20"
  • Frame: Sunday Soundwave v3, 21" top tube, 100% chromoly aftermarket, removable brake hardware, 41-Thermal lifetime warranty
  • Top tube: 21"
  • Fork: Sunday Darkwave, 20", 100% chromoly aftermarket, 28mm offset, 41-Thermal lifetime warranty
  • Headset: FSA integrated conical, 1-1/8", with Sunday aftermarket aluminium cap
  • Stem: Sunday Freeze top load, 48mm
  • Bars: Odyssey Super Highway, 100% chromoly aftermarket, 2-piece
  • Grips: Odyssey BROC
  • Brakes: Odyssey Springfield U-brake, Odyssey Quik Slic cable
  • Brake lever: Odyssey Monolever
  • Cranks: Odyssey Thunderbolt+, 41-Thermal lifetime warranty
  • Sprocket: Odyssey Utility Pro
  • Rims: Odyssey Hazard Lite
  • Tyres: Odyssey Path Pro
  • Seat: Odyssey Slugger stitch, pivotal
  • Seat post: Odyssey pivotal
  • Note: Available right-hand or left-hand drive

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 Soundwave Special 20 Inch Bike (2026)

Brand: Sunday SKU:

$2,599.99 AUD

Or 4 payments of $649.99 AUD with

Colour - Gloss Lichen Blue

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
$2,599.99 AUD

Price match request

Sunday Soundwave Special 20 Inch Bike (2026) - Gloss Lichen Blue / 21

Metro bike shipping from $59.99

Regional and remote rates may differ

Free in-store pickup - Brisbane

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