Sunday Primer 18" 2020 BMX Bike

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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.

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Product Specs
  1. FRAME MATERIAL: Hi-Ten Steel
  2. WHEEL SIZE: 18"
  3. TOP TUBE LENGTH: 18.5"
  4. CHAIN STAY LENGTH: 11.7-12"
  5. HEADTUBE ANGLE: 74.5°
  6. SEAT TUBE ANGLE: 71°
  7. FORKS: Sunday Primer, 18" fork w/ 2-piece steerer tube and welded pre-load
  8. BARS: Sunday, 7.65 x 25.5", 12° backsweep, 1° upsweep, 2-piece
  9. STEM: Sunday Freeze front load, 48mm
  10. HEADSET: FSA integrated, 1-1/8"
  11. BRAKE MOUNTS: Welded
  12. BRAKES: Odyssey Springfield U-brake
  13. FRONT HUB: Sunday, 28H, low-flange, loose-ball, 3/8" axle
  14. FRONT RIM: P-7X aluminum, 18", 28H
  15. REAR HUB: Sunday, 20H, sealed, 14mm axle w/ 10T Driver
  16. REAR RIM: P-7X aluminum, 18", 28H
  17. TYRES: Sunday Current, 18 x 2.2"
  18. SPROCKET: Sunday Sabertooth V2, 25T, steel
  19. CRANKS: 140mm, 3-piece, chromoly
  20. BB: Sealed, Mid, 19mm
  21. PEDALS: Wellgo platform, plastic
  22. SEAT: Sunday Badge, seat and post combo
  23. GEARING: 25/10
  24. WEIGHT: TBC

Product Highlights
  • 18" Wheels are great for riders just a bit too small to manoeuvre a full size 20" Bike (approx 3ft 4 - 4ft 4 / 100cm-130cm)
  • Great for Riders who are just too small to handle a full size 20" BMX
  • Strong Hi-Ten Steel Frame
  • Stable Frame Geometry To Help Young Riders Progress
  • Reliable, Low-Maintenance Sealed Rear Hub

BMX BIKE SIZE GUIDE

BMX bikes are measured in two ways, the size of the wheel (20” is the standard BMX Wheel size) and the length of the frame which is gauged by the top tube measurement.

Below is a guide to what size you should be looking for. note there is some overlap in sizes as personal preference also comes into the equation. 

BMX Bike Size Chart

< IMPERIAL (FEET & INCHES) --- METRIC (CM) >

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