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.

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.

Highlights

100% aftermarket parts kit
41-Thermal lifetime warranty
Odyssey Clutch v2 freecoaster
Thunderbolt+ cranks, left or right

Description

If you are chasing a super premium ride that has been proven over and over again- then look no further. The Sound Wave Special is your bike. Built tough with a 100% Chromoly Aftermarket Sunday Soundwave V3 Frame and a parts kit comprised of the best of the best that Odyssey and Sunday have to offer. This is the bike that'll take you places.

Features

100% aftermarket parts kit. Every part is one you would have chosen yourself, from the Soundwave v3 frame to the Hazard Lite rims.
41-Thermal lifetime warranty. Frame, fork, bars and cranks are all covered for life, so you can ride it like you stole it.
Odyssey Clutch v2 freecoaster. Roll backwards without pedalling, on a 36H sealed hub with a 9T driver and 14mm female axle.
Thunderbolt+ cranks, left or right. 170mm 100% chromoly cranks that run LHD or RHD on a sealed 22mm mid bottom bracket.
Light for a full chromoly build. 10.61 kg brakeless, with a 21" top tube, 75° head angle and Odyssey Path Pro 2.4" tyres.

Specifications

Size: 21" top tube
Frame: Sunday Soundwave v3, 100% chromoly aftermarket frame, 41-Thermal® lifetime warranty, removable brake hardware
Top tube: 21"
Chainstay: 13.2" - 13.5"
Head tube angle: 75°
Seat tube angle: 71°
Standover: 9”
Bottom bracket height: 11.5"
Fork: Sunday Darkwave, 20", 100% chromoly aftermarket fork, 41-Thermal® lifetime warranty, 28mm offset
Headset: FSA integrated conical, 1-1/8", Sunday aftermarket aluminium cap
Stem: Sunday Freeze top load, 48mm
Bars: Odyssey Super Highway, 100% chromoly aftermarket, 2-piece, 9.5" rise, 29" wide, 11° backsweep, 1° upsweep
Grips: Odyssey BROC
Brakes: Odyssey Springfield U-brake, Odyssey Quik Slic cable
Brake lever: Odyssey Monolever
Cranks: Odyssey Thunderbolt+, 170mm, 100% chromoly, 41-Thermal® lifetime warranty, LHD or RHD
Bottom bracket: Sealed, mid, 22mm
Sprocket: Odyssey Utility Pro, 25T w/ plastic guard
Chain: KMC Z1 eHX-W
Pedals: Odyssey Twisted PC Pro
Front hub: Odyssey Vandero Pro, 36H, sealed, 3/8" female axle, 2 plastic guards
Rear hub: Odyssey Clutch v2 freecoaster, 36H, 14mm female axle w/ 9T driver, non-drive plastic guard
Spokes: 14g steel, black
Rims: Odyssey Hazard Lite, 20", 36H
Tyres: Odyssey Path Pro, aftermarket, 20 x 2.4" (front and rear)
Seat: Odyssey Slugger stitch, pivotal
Seat post: Odyssey pivotal
Seat clamp: Sunday aftermarket
Weight: 10.61 kg (brakeless)

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 Sound Wave Special 20 Inch Bike (2023)

Name: Sunday Sound Wave Special 20 Inch Bike (2023)
Brand: Sunday
SKU: SUBK251-23-BLK
Price: 1773.0 USD
Availability: OutOfStock

Brand: Sunday SKU: Click to copy the SKU and show the pick location

$1,773.00 USD

Or 4 payments of $443.25 USD with

Recommended Rider Height:

175cm+

Colour - Rust Proof Black

Top Tube Length - 21

Drive Side - Left Hand Drive

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 height	Wheel size	Top tube
60 to 91cm	12"	12 to 12.5"
81 to 106cm	14"	14 to 14.5"
96 to 122cm	16"	16 to 16.5"
122 to 147cm	18"	18 to 18.5"
147 to 157cm	20"	19.75 to 20.25"
157 to 168cm	20"	20 to 20.5"
168 to 175cm	20"	20.25 to 20.75"
175 to 183cm	20"	20.5 to 21"
183 to 190cm and up	20"	20.75 to 21.5"
160cm and up	22"	21 to 22.25"
160cm and up	24"	21.75 to 22"
160cm and up	26"	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