• Description
  
• Specifications
  
• Geometry

• PRODUCT INBOUND TO MESEROLL. ESTIMATED ARRIVAL 12/18/25
  
  The Primer rides like a pro-level bike that has been scaled down to meet the needs of smaller BMXers. Sunday's unique geometry helps them quickly adapt to bigger bikes as they grow. 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, 16.5" top tube, integrated 1-1/8" head tube 
  Fork: Sunday Primer, 16" fork w/ 2-piece steerer tube and welded pre-load 
  Handlebar: Sunday, 2-piece 
  Stem: Top load, aluminum, 40mm 
  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: Velo Junior 
  Seat: Sunday Badge, seat and post combo 
  Seat post: Integrated 
  Seat Clamp: Sunday 
  Sprocket: Sunday Sabertooth v2, 25T, steel 
  Cranks: 127mm, 3-piece, chromoly 
  BB Parts: Sealed, Mid, 19mm 
  Pedals: Wellgo Junior platform, plastic 
  Rims: P-7X aluminum, 16", 20H 
  Front Hub: Sunday, 20H, low-flange, loose-ball, 3/8" axle 
  Rear Hub: Sunday, 20H, sealed, 14mm axle w/ 10T Driver 
  Spokes: 14g steel, black 
  Tires: Sunday Current, 16 x 2.1" (F & R) 
  Chain: KMC S1
  Approx. Weight: 23.3lbs (with brakes)

• FRAME:

  Top Tube Length: 16.5" 
  Head Tube Angle: 74.5° 
  Seat Tube Angle: 71° 
  Chainstay Length: 10.6"-10.85” 
  Bottom Bracket Height: 9.25" 
  Standover: 6.9" 

  HANDLEBAR:

  Rise: 6.75" 
  Width: 23" 
  Backsweep: 12° 
  Upsweep: 1°

  
  

The Primer rides like a pro-level bike that has been scaled down to meet the needs of smaller BMXers. Sunday's unique geometry helps them quickly adapt to bigger bikes as they grow. 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.