The 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.

Key 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, chromoly
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
Tires: Sunday Current, 18 x 2.2" (F & R)
Chain: KMC S1
Approx. Weight: 23.3lbs (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°

Sunday 2023 Primer 18" Complete BMX Bike - Gloss Orange Soda