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

The shorter chainstay, 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°