Fly Proton Freecoaster BMX Bike 2020

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  • The Proton now features full 4130 chromoly 4-piece bars along with full 4130 chromoly 27mm offset forks and a taller 9.25” standover height frame, giving the bike a better overall look and feel. On top of that, the 2020 Proton comes equipped with a freecoaster, four pegs and a short and responsive 13” rear end perfect for all of the street riders out there.

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Product Specs
  1. FRAME MATERIAL: FULL 4130 CRMO
  2. WHEEL SIZE: 20"
  3. TOP TUBE LENGTH: 21"
  4. CHAIN STAY LENGTH: 13"
  5. HEADTUBE ANGLE: 75°
  6. SEAT TUBE ANGLE: 71°
  7. FORKS: FULL 4130 CRMO / 1 PIECE STEER TUBE / 28MM OFFSET
  8. BARS: FULL 4130 CRMO / 9"
  9. STEM: TREBOL TOP LOAD / FORGED / 6061-T6 ALUMINUM / 50MM
  10. HEADSET: INTERNAL SEALED BEARING
  11. BRAKE MOUNTS: Removable
  12. BRAKES: TREBOL SPRINGHANGER / FORGED / 6061 T-6 ALUMINUM
  13. FRONT HUB: TREBOL BUENO / SEALED BEARING / 3/8” FEMALE AXLE / 36H
  14. FRONT RIM: TREBOL / DOBLE SIDE WALLED / 6061-T6 ALUMINUM / 36H
  15. REAR HUB: TREBOL BUENO FC / SEALED BEARING / 14MM MALE AXLE / 36H / 9T
  16. REAR RIM: TREBOL / DOBLE SIDE WALLED / 6061-T6 ALUMINUM / 36H
  17. TYRES: TREBOL 2.35 FRONT & REAR / 60 TPI / 65 PSI
  18. SPROCKET: TREBOL / CNC MACHINED / 6061-T6 ALUMINUM / 25T
  19. CRANKS: TREBOL 3PC / 4130 CRMO / 175 MM ARM LENGTH
  20. BB: MID / SEALED BEARING
  21. PEDALS: FLY RUBEN GRAPHITE / NYLON - FIBERGLASS COMPOUND
  22. SEAT: FLY PROTON TRIPOD / 100% SYNTHETIC LEATHER / 25 MM THICKNESS
  23. GEARING: 25/9
  24. WEIGHT: 11.3 KG/24.9 LB

Product Highlights
  • Longer top tube is great for taller riders who need a bit more room (6ft / 180cm plus)
  • Designed to excel at Street riding thanks to responsive geometry but will feel at home in any riding environment
  • Allows for more fakie tricks thanks to the Freecoaster rear hub
  • Sealed Bearings All Round
  • Strong 3 Piece Cranks

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