The Sunday Primer 18 Inch Bike (2025) in red, viewed from the side against a white background, features black handlebars, seat, and tires along with pro-style frame geometry and Odyssey Springfield brakes for enhanced control.
The Sunday Primer 18 Inch Bike (2025), shown from the side on a white background, features a yellow frame with black handlebars, seat, and tires, plus pro-style BMX frame geometry.
A Sunday Primer 18 Inch Bike (2025) with a red pro-style frame, black handlebars, seat, and tires is parked on a paved surface.
The Sunday Primer 18 Inch Bike (2025), featuring a yellow frame, black handlebars, seat, and tires, is parked on pavement. It offers pro-style geometry for performance and Odyssey Springfield brakes for reliable stopping power.
Close-up of a black handlebar stem with "SUNDAY" engraved, mounted on the red frame of the Sunday Primer 18 Inch Bike (2025) featuring pro-style geometry.
Front view of the Sunday Primer 18 Inch Bike (2025) showing its branded handlebar, left brake lever, Odyssey Springfield brakes, and yellow pro-style frame geometry below.
Close-up of a black seat with "Sunday Bikes" logo on the Sunday Primer 18 Inch Bike (2025), showing a red frame with pro-style geometry, visible graphics, and part of the rear tire.
Close-up of a black handlebar and stem on the yellow Sunday Primer 18 Inch Bike (2025) with pro-style BMX frame geometry, and a tire visible in the background.
Close-up of Odyssey Springfield brakes on the rear wheel of the Sunday Primer 18 Inch Bike (2025), showing the black brake caliper, brake cable, and part of the tire on a red BMX with pro-style frame geometry.
Close-up of a black handlebar grip and brake lever on the Sunday Primer 18 Inch Bike (2025) with pro-style frame geometry, photographed outdoors.
Close-up of the black crank and chainring on the Sunday Primer 18 Inch Bike (2025), attached to a red pro-style frame with the chain on the teeth.
Close-up view of the Sunday Primer 18 Inch Bike (2025) hub with "SUNDAY" branding, surrounded by black spokes and red components, emphasizing its pro-style frame geometry.
The Sunday Primer 18 Inch Bike (2025) is a black BMX featuring thick tires, pro-style frame geometry, straight handlebars, and a padded seat, pictured from the side against a white background.
The Sunday Primer 18 Inch Bike (2025) is a gold BMX with black handlebars, seat, pedals, and wheels. It features pro-style frame geometry and is shown on a white background.
The Sunday Primer 18 Inch Bike (2025) features a purple pro-style BMX frame, black handlebars, seat, and tires, shown side view against a white background.

Sunday Primer 18 Inch Bike (2025)

From

$799.99 AUD

 $859.99 AUD

Or 4 payments of $199.99 AUD with

Colour

Top Tube Length

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The Sunday Primer 18 Inch Bike (2025) in red, viewed from the side against a white background, features black handlebars, seat, and tires along with pro-style frame geometry and Odyssey Springfield brakes for enhanced control.

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

$799.99 AUD

RRP:

$859.99 AUD

Price match

SUBK230-25-RED

With Supplier
The Sunday Primer 18 Inch Bike (2025), shown from the side on a white background, features a yellow frame with black handlebars, seat, and tires, plus pro-style BMX frame geometry.

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

$799.99 AUD

RRP:

$859.99 AUD

Price match

SUBK230-25-YEL

With Supplier
The Sunday Primer 18 Inch Bike (2025) is a black BMX featuring thick tires, pro-style frame geometry, straight handlebars, and a padded seat, pictured from the side against a white background.

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

$799.99 AUD

Price match

SUBK230-25-BKG

In Stock
The Sunday Primer 18 Inch Bike (2025) is a gold BMX with black handlebars, seat, pedals, and wheels. It features pro-style frame geometry and is shown on a white background.

Sunday Primer 18 Inch Bike (2025) / Metallic Gold / 18.5

$799.99 AUD

Price match

SUBK230-25-GLD

Sold Out
The Sunday Primer 18 Inch Bike (2025) features a purple pro-style BMX frame, black handlebars, seat, and tires, shown side view against a white background.

Sunday Primer 18 Inch Bike (2025) / Matte Grape Soda / 18.5

$799.99 AUD

Price match

SUBK230-25-GRP

Sold Out

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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