Fly Proton CST BMX Bike 2021

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  • What set the Proton apart from the Neutron are a 100% CrMo frame, fork and bars, including Fly's fork with integrated cone shape design. One improvement that will make many people happy are the aftermarket Fuego tyres and nylon hub guards that are included this year.

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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: 13.2"
  5. HEADTUBE ANGLE: 75°
  6. SEAT TUBE ANGLE: 71°
  7. FORKS: INTEGRATED CONE SHAPE DESIGN / FULL 4130 CRMO / 1 PIECE STEER TUBE
  8. BARS: FULL 4130 CRMO
  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 MALE / SEALED BEARING / 10MM MALE AXLE / 36H
  14. FRONT RIM: TREBOL / DOBLE SIDE WALLED / 6061-T6 ALUMINUM / 36H
  15. REAR HUB: TREBOL MALE CASSETTE / SEALED BEARING / 14MM MALE AXLE / 36H / 9T
  16. REAR RIM: TREBOL / DOBLE SIDE WALLED / 6061-T6 ALUMINUM / 36H
  17. TYRES: FLY FUEGO 2.30 FRONT & REAR / 60 TPI / 120 PSI
  18. SPROCKET: TREBOL / CNC MACHINED / 6061-T6 ALUMINUM / 25T
  19. CRANKS: TREBOL 3PC / 4130 CRMO / 170 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: 11.2 KG / 24.6 LB

Product Highlights
  • Longer top tube is great for taller riders who need a bit more room (6ft / 180cm plus)
  • A great all rounder suitable for any type of riding
  • Sealed Bearings All Round
  • Strong Double Wall Rims
  • Filled With Aftermarket parts

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