Fly Proton CST BMX Bike
$830.00
Fly Proton CST BMX Bike
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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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Seen this cheaper elsewhere? We price match any legitimate competitor! For a price match to be accepted, the item has to be identical and be in stock and available for purchase at our competitor. We will notify you by email of the decision when reviewed within 24hours but usually much sooner
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- Free US Shipping Over $199*
- Complete Tracking On All Orders
- 90-day Returns Policy
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- *select bikes and bulky items ship with a $19.95 flat fee
Product Specs
- FRAME MATERIAL: FULL 4130 CRMO
- WHEEL SIZE: 20"
- TOP TUBE LENGTH: 21"
- CHAIN STAY LENGTH: 13.2"
- HEADTUBE ANGLE: 75°
- SEAT TUBE ANGLE: 71°
- FORKS: INTEGRATED CONE SHAPE DESIGN / FULL 4130 CRMO / 1 PIECE STEER TUBE
- BARS: FULL 4130 CRMO
- STEM: TREBOL TOP LOAD / FORGED / 6061-T6 ALUMINUM / 50MM
- HEADSET: INTERNAL SEALED BEARING
- BRAKE MOUNTS: Removable
- BRAKES: TREBOL SPRINGHANGER / FORGED / 6061 T-6 ALUMINUM
- FRONT HUB: TREBOL MALE / SEALED BEARING / 10MM MALE AXLE / 36H
- FRONT RIM: TREBOL / DOBLE SIDE WALLED / 6061-T6 ALUMINUM / 36H
- REAR HUB: TREBOL MALE CASSETTE / SEALED BEARING / 14MM MALE AXLE / 36H / 9T
- REAR RIM: TREBOL / DOBLE SIDE WALLED / 6061-T6 ALUMINUM / 36H
- TYRES: FLY FUEGO 2.30 FRONT & REAR / 60 TPI / 120 PSI
- SPROCKET: TREBOL / CNC MACHINED / 6061-T6 ALUMINUM / 25T
- CRANKS: TREBOL 3PC / 4130 CRMO / 170 MM ARM LENGTH
- BB: MID / SEALED BEARING
- PEDALS: FLY RUBEN GRAPHITE / NYLON - FIBERGLASS COMPOUND
- SEAT: FLY PROTON TRIPOD / 100% SYNTHETIC LEATHER / 25 MM THICKNESS
- GEARING: 25/9
- WEIGHT: 24.6lbs
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 throughout
- Strong and durable double walled rims
- Fitted with high-quality aftermarket components
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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. We have also simplified for you into XS, Small, Medium, etc.Here is a guide to what size you should be looking for - note that there is some overlap in sizes, as personal preference also comes into the equation!
| Rider Height (in) | Rider Height (cm ) | Wheel Size (in) | Top Tube Length (in) |
|---|---|---|---|
| 2FT - 3FT | 60 - 90cm | 12" | 11.5" - 13" |
| 2'8" - 3'4" | 80 - 100 cm | 14" | 2.8" - 15" |
| 3FT - 3'8" | 90 - 110cm | 16" | 14.5" - 17" |
| 3'6" - 4'6" | 105 - 135cm | 18" | 17" - 18.5" |
| 4'6" - 5'1" (XS) |
135 - 155cm | 20" | 18" - 20" |
| 4'10" - 5'4" | 147 - 162cm | 20" | 20" - 20.25" (XS - S) |
| 5'2"- 5'8" | 157 - 173cm | 20" | 20" - 20.5" (S - M) |
| 5'6" - 6FT | 165 - 185cm | 20" | 20.25" - 21" (M - L) |
| 6FT + | 180cm + | 20" | 20.75" + (L - XL) |
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