The Sunday Primer 16 Inch Bike (2025) in teal is a BMX bike designed for children, featuring black handlebars, pedals, and tires. Its simple frame design and robust chain drive system ensure reliability, while the Odyssey Springfield Brakes provide superior stopping power for safe riding.

The Sunday Primer 16 Inch Bike (2025), featuring a teal frame, black seat, black handlebars, and thick tires with Pro-Style Geometry, is parked on a concrete surface.

A close-up view of the handlebars and front of a blue Sunday Primer 16 Inch Bike (2025) on a concrete surface. "Sunday" is printed on the handlebars, showcasing its Odyssey Springfield Brakes.

Close-up of a black bicycle handlebar and stem with four bolts and a cap on the Sunday Primer 16 Inch Bike (2025). The teal bike frame stands out against the gray pavement in the background, showcasing precision components like the Odyssey Springfield Brakes.

Close-up image of a black chainring and crankarm on the Sunday Primer 16 Inch Bike (2025), attached to a teal frame with Odyssey Springfield Brakes and a section of the tire visible in the background.

Close-up view of the turquoise frame on the Sunday Primer 16 Inch Bike (2025), highlighting the branding "Primer" and "Sunday," with a focus on the chain and Odyssey Springfield Brakes.

Close-up of a black wheel hub labeled "Sunday," with spokes radiating outward on the Sunday Primer 16 Inch Bike (2025). The blurred background emphasizes its pro-level BMX quality, perfect for 16” bikes.

Close-up of the Odyssey Springfield Brakes on the rear of a Sunday Primer 16 Inch Bike (2025) in teal, mounted over a black tire—ideal for pro-level BMX performance.

Close-up of the black front wheel hub and spokes on the Sunday Primer 16 Inch Bike (2025), with "Sunday" in white lettering on the fork, showcasing pro-level BMX features.

Close-up of a black "wellgo" pedal with a yellow reflector, attached to a black crank arm on light concrete—perfect for pro-level setups like the 2025 Sunday Primer 16 Inch Bike.

Close-up of a bicycle handlebar with a black grip and brake lever, showing part of the turquoise Sunday Primer 16 Inch Bike (2025) frame—perfect for upgrading your 16” BMX with Odyssey Springfield Brakes.

Description

The Sunday Primer 16" is better than ever and suits younger riders who already have plenty of tricks up their sleeve. It rides like a pro level bike scaled down to what smaller BMXers need, and Sunday's own geometry helps them adapt quickly as they grow onto bigger bikes.

The parts kit backs that up. Odyssey Springfield U-brakes, a fully sealed 10T cassette hub, an FSA integrated headset and a KMC S1 chain give you reliability you can count on, all rolling on Sunday Current 16 x 2.1" tyres.

Features

Pro style geometry, scaled to 16". Sunday's own geometry means younger riders adapt quickly when it is time to move onto a bigger bike.
Fully sealed 10T cassette hub. A sealed rear hub on a 14mm axle keeps the drive turning reliably ride after ride.
Odyssey Springfield U-brakes. Proper aftermarket brakes with an alloy lever and Odyssey Quik Slic cable, so stopping is never the weak point.
3 piece chromoly cranks, 127mm. A sealed 19mm mid bottom bracket and a 25T steel Sabertooth v2 sprocket back them up.
Light and easy up front. A 40mm top load stem, 2 piece Sunday bars and Velo Junior grips keep the cockpit manageable for small hands.

Specifications

Size: 16" wheels, 16.5" top tube
Frame: Sunday Primer, 16.5" top tube, integrated 1-1/8" head tube
Top tube: 16.5"
Fork: Sunday Primer, 16", 2 piece steerer tube with welded pre-load
Headset: FSA integrated 1-1/8" with FSA aluminium cap
Stem: Top load, aluminium, 40mm
Bars: Sunday, 2 piece
Grips: Velo Junior
Brakes: Odyssey Springfield U-brake with Odyssey Quik Slic cable
Brake lever: Aluminium, U-brake compatible
Cranks: 127mm, 3 piece, chromoly
Bottom bracket: Sealed, mid, 19mm
Sprocket: Sunday Sabertooth v2, 25T, steel
Chain: KMC S1
Pedals: Wellgo Junior platform, plastic
Front hub: Sunday, 20H, low flange, loose ball, 3/8" axle
Rear hub: Sunday, 20H, sealed, 14mm axle with 10T driver
Spokes: 14g steel, black
Rims: P-7X aluminium, 16", 20H
Tyres: Sunday Current, 16 x 2.1", front and rear
Seat: Sunday Badge, seat and post combo
Seat post: Integrated
Seat clamp: Sunday
Weight: 10.6 kg approx.

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 Primer 16 Inch Bike (2025)

Name: Sunday Primer 16 Inch Bike (2025)
Brand: Sunday
SKU: SUBK229-25-TUR
Price: 799.99 AUD
Availability: InStock

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

From

$799.99 AUD

$839.99 AUD

Or 4 payments of $199.99 AUD with

Colour - Turquoise

Top Tube Length - 16.5

A 16 inch bike suits a rider of about 96 to 122cm, usually 4 to 7 years old, on a 16 to 16.5 inch top tube. It is the size most kids learn to ride properly on.

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. At this wheel size the top tube barely changes the fit: go by height, and check they can stand over the bike flat footed.

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.

Between two wheel sizes? Go up. Kids grow into a bike far faster than they grow out of the fun.
They should be able to stand over the top tube with both feet flat on the ground.

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

Read the full buying guide