2019 Primer 18″
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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.


  • 18″ Specific Geometry
  • Sunday Freeze Front Load Stem
  • 9t Cassette Hub
  • Sunday Cornerstone Grips
  • Odyssey Springfield Brakes


Frame: 18" Hi-Ten w/ Integrated HT
Fork: 18" Hi-Ten 2pc Steerer
Handlebar:  Primer 7.65" x 25.5", 12° Back, 1 Up°
Stem: 48mm Freeze Front Load
Headset: FSA Integrated w/10mm Alloy Spacer
Headset Cap: M6 Preload w/ Alloy Top Cap
Brake Lever: Junior Lever
Brake: Odyssey Springfield
Brake Cable: Odyssey Quik Slic
Grips: Sunday Cornerstone
Seat: Sunday Badge 1-PC
Seat Post: Integrated
Seat Clamp: 28.6mm w/Sunday Logo
Sprocket: 25t Steel
Cranks: 155mm Tubular 3-piece, Chromoly
BB Parts: 19mm Sealed Mid
Pedals: Wellgo w/o Logo
Rims: 18" P-7X 28H
Front Hub: Unselaed 3/8" 28H w/ Sunday Logo
Rear Hub: Sealed 9t Driver, 28H
Spokes: 14G Steel
Tires: Sunday Current 18" x 2.20"
Chain: KMC Z410 BUBU

*Specs subject to change without notice.


Top Tube Length: 18.5"
Head Tube Angle: 74.5°
Seat Tube Angle: 71°
Chainstay Length: 11.75-12.00”
Bottom Bracket Height: 10.35"
Standover: 7.5"
Rise: 7.65"
Width: 25.5"
Backsweep: 12°
With Brakes: 23.3lbs