A red Sunday Primer 18 Inch Bike (2025) with black handlebars, seat, and tires is shown against a white background, featuring Odyssey Springfield brakes.
The Sunday Primer 18 Inch Bike (2025) is a bright yellow BMX bike with black handlebars and seat, featuring thick tires, an Odyssey Springfield brakes system, and a compact frame.
A Sunday Primer 18 Inch Bike (2025) in red with black handlebars and wheels, featuring Pro-Style geometry and Odyssey Springfield brakes, standing on a concrete surface.
A 2025 Sunday Primer 18 Inch BMX bike in yellow on a paved surface, featuring a black seat, handlebars, Odyssey Springfield brakes, and tires.
Close-up view of a BMX bike handlebar stem with the word "SUNDAY" embossed on it. The stem is bolted and appears mounted on a red Sunday Primer 18 Inch Bike (2025) frame.
Close-up view of the handlebars of the Sunday Primer 18 Inch Bike (2025) with a black frame and partial yellow detailing, equipped with Odyssey Springfield brakes, standing on concrete.
Close-up of a black bicycle seat mounted on the frame of a 2025 Sunday Primer 18 Inch Bike in red, adorned with the "Sunday Bikes" logo and featuring Odyssey Springfield brakes in the background.
Close-up of the handlebar and stem on a Sunday Primer 18 Inch Bike (2025). The black stem is affixed to a yellow BMX frame and features a black bolt cap adorned with metallic accents, highlighting its Pro-Style geometry.
Close-up of Odyssey Springfield brakes labeled "SPRINGFIELD," attached to a red Sunday Primer 18 Inch Bike (2025) frame and a black tire with a textured tread pattern.
Close-up of a black handlebar grip and brake lever on a yellow BMX bike. The grip has a textured surface with branding, featuring Odyssey Springfield brakes on the Sunday Primer 18 Inch Bike (2025). The background is blurred.
Close-up of a black crankset with a chain on a red bicycle frame. The crankset, emblazoned with the brand logo "SUNY," is part of the 2025 Sunday Primer 18 Inch Bike featuring Pro-Style geometry and Odyssey Springfield brakes for optimal performance.
Close-up of a bicycle wheel hub labeled "Sunday," showcasing black spokes connected to a red frame. It's the hallmark of the sleek Sunday Primer 18 Inch Bike (2025), renowned for its Odyssey Springfield brakes.

Sunday Primer 18 Inch Bike (2025)

From

$809.99 AUD

 $859.99 AUD

Or 4 payments of $202.49 AUD with

Pay in 4 interest-free payments

Colour

Top Tube Length

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A red Sunday Primer 18 Inch Bike (2025) with black handlebars, seat, and tires is shown against a white background, featuring Odyssey Springfield brakes.

Sunday Primer 18 Inch Bike (2025) / Fire Engine Red / 18.5

$809.99 AUD

RRP:

$859.99 AUD

Price match

SUBK230-25-RED

In Stock
The Sunday Primer 18 Inch Bike (2025) is a bright yellow BMX bike with black handlebars and seat, featuring thick tires, an Odyssey Springfield brakes system, and a compact frame.

Sunday Primer 18 Inch Bike (2025) / Gloss Yellow / 18.5

$809.99 AUD

RRP:

$859.99 AUD

Price match

SUBK230-25-YEL

With Supplier

Description
The Sunday Primer 18” is the ideal choice for riders who’ve outgrown a 16” but aren’t quite ready for a 20”.

The shorter chain stay, lighter wheels and size-specific, pro-style frame geometry makes it the go-to bike for serious BMXers in this size range. The Primer is packed with quality parts like Odyssey Springfield brakes and a fully sealed cassette hub for reliability that you can count on every time.

Features
- 18" Pro-Style geometry
- Sunday Freeze front load stem
- 9T cassette hub
- Sunday Cornerstone grips
- Odyssey Springfield brakes
- FSA headset
- KMC S1 chain

Specifications
Frame - Sunday 'Primer', 18.5" top tube, integrated 1-1/8" head tube
Fork - Sunday 'Primer', 18" fork w/ 2-piece steerer tube and welded pre-load
Handlebar - Sunday, 2-piece
Stem - Sunday 'Freeze' front load, 48mm
Headset - FSA integrated, 1-1/8"
Alloy Cap - FSA aluminum cap
Brake Lever - Aluminum, U-brake compatible
Brakes - Odyssey 'Springfield' U-brake
Brake Cable - Odyssey 'Quik Slic'
Grips - Sunday 'Cornerstone'
Seat - Sunday 'Badge', seat and post combo
Seat Post - Integrated
Seat Clamp - Sunday
Sprocket - Sunday 'Sabertooth v2', 25T, steel
Cranks - 140mm, 3-piece, Cr-Mo
BB Parts - Sealed, Mid, 19mm
Pedals - Wellgo platform, plastic
Rims - P-7X aluminum, 18", 28H
Front Hub - Sunday, 28H, low-flange, loose-ball, 3/8" axle
Rear Hub - Sunday, 28H, sealed, 14mm axle w/ 9T Driver
Spokes - 14g steel, black
Tyres - Sunday 'Current', 18 x 2.2" (F & R)
Chain - KMC S1
Approx. Weight - 10.5kgs (with brakes)

Frame Geometry
Top Tube Length - 18.5"
Head Tube Angle - 74.5°
Seat Tube Angle - 71°
Chainstay Length - 11.7-12.00”
Bottom Bracket Height - 10.35"
Standover - 7.5"

Handlebar Geometry
Rise - 7.65"
Width - 25.5"
Backsweep - 12°
Upsweep - 1°

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Sunday Primer 18 Inch Bike (2025) Features

Brand:

Sunday