< IMPERIAL (FEET & INCHES) --- METRIC (CM) >
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The Proton has been refined for 2019 just like the rest of the Fly mid-range bike line, The fork has been upgraded to a hydroformed 1-piece steerer tube. This bike now comes with a Trebol headset, a stronger 510 chain, bigger bars and a taller standover height, improving the overall look and feel, The cranks have been upgraded to the clean Trebol Bueno cranks. The 2019 Proton now comes equipped with four pegs, a shorter 13" rear end and shorter 28mm offset forks that is geared more toward the street riders out there!
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- Standard Shipping From $13.95
- Standard Delivery From 2-8 Working Days (Canada & Mexico)
- Delivery From 2-5 Working Days (South America)
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Product Specs
- FRAME MATERIAL: Full 4130 Chromoly
- WHEEL SIZE: 20"
- TOP TUBE LENGTH: 21"
- CHAIN STAY LENGTH: TBC
- HEADTUBE ANGLE:
- SEAT TUBE ANGLE:
- FORKS: Full Chromoly, Tapered Legs, 10mm
- BARS: Full Chromo 8.75" x 28"
- STEM: Trebol Top Load
- HEADSET: Sealed Integrated
- BRAKE MOUNTS: Removable
- BRAKES: Fly Springhanger U-Brake
- FRONT HUB: Trebol Bueno Sealed
- FRONT RIM: Trebol, Alloy Double Wall
- REAR HUB: Trebol bueno FC Hub, 14mm 9t Driver
- REAR RIM: Trebol, Alloy Double Wall
- TYRES: Trebol 2.35"
- SPROCKET: Trebol 25t Aluminum
- CRANKS: Trebol 3pc 4130 Chromoly 175mm
- BB: Sealed Mid
- PEDALS: Ruben Graphite
- SEAT: Fly Proton Tripod
- GEARING: 25/9
- WEIGHT: 24.9lbs / 11.3Kgs
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
- Great for gringing, pegs included
- Allows for more fakie tricks thanks to the Freecoaster rear hub
- Sealed bearings throughout
NEED SOME HELP CHOOSING A BMX BIKE?
we have compiled a complete bmx buyers guide to help you through the process!
Here at sourcebmx we are all riders so we can offer advice that only 100% rider-owned bmx shops can - just ask
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 which we have also simplified for you into XS, Small, Medium etc categories.
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.
