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.

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

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°