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Sunday Primer 18" BMX Bike-Matte Black - 1
Sunday Primer 18" BMX Bike-Matte Black - 2
Sunday Primer 18" BMX Bike-Matte Black - 3
Sunday Primer 18" BMX Bike-Matte Black - 4
Sunday Primer 18" BMX Bike-Matte Black - 5
Sunday Primer 18" BMX Bike-Matte Black - 6
Sunday Primer 18" BMX Bike-Matte Black - 7
Sunday Primer 18" BMX Bike-Matte Black - 8

Sunday Primer 18" BMX Bike-Matte Black

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About This Product: Sunday Primer 18" BMX Bike-Matte Black

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.

Sunday 2020 Primer 18-inch BMX Bike - Black


  • 18″ Pro-Style Geometry
  • Sunday Freeze Front Load Stem
  • 9t Cassette Hub
  • Sunday Cornerstone Grips
  • Odyssey Springfield Brakes
  • FSA Headset
  • KMC S1 Chain


  • Frame: Sunday Primer, 18.5" TT, integrated 1-1/8" head tube
  • Fork: Sunday Primer, 18" fork w/ 2-piece steerer tube and welded pre-load
  • Handlebar: Sunday, 7.65 x 25.5", 12° backsweep, 1° upsweep, 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 Conerstone
  • 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", 20H
  • 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

*Specs subject to change without notice.


  • 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"
  • Rise: 7.65"
  • Width: 25.5"
  • Backsweep: 12°
  • Upsweep:
  • With Brakes: 23.3lbs

Complete Bike specifications and components may differ from photos and description. Manufacturers reserve the right to make changes and/or substitutions due to parts availability, production requirements and ongoing development decisions.

Need Some help Choosing a BMX Bike?

Selecting the right size BMX bike is vital for a smooth and delightful ride. At J&R Bicycles, we understand the BMX world inside out because we're passionate riders ourselves. Just reach out to us, and we'll be more than happy to assist you on your journey to finding the perfect BMX bike.

Curious to learn more? We've compiled a comprehensive BMX buyer's guide to demystify the process. Read on, and together, we'll uncover the BMX bike that perfectly matches your riding style and preferences.