Fly’s Sion is perfect for established park riders who want a better bike to flow big bowls. This bike has a 28 tooth sprocket to give you higher top speed, and a 13.4″ chainstay to give you more control. The 21″ top tube makes it best for taller riders.
✅ – Full Chromoly
⛔️ – Under $500
✅ – Double Wall Rims
✅ – Pegs
✅ – Fully Sealed Bearings
✅ – 3 pc. Cranks
⛔️ – Freecoaster
Highlights
- Full Chromoly
- 48 spline cranks
- Double-wall rims
- Built-in chain tensioners
Images From https://www.flybikes.com/product/2020-sion-flat-black
2020 Fly Sion Overview
The Sion is designed to be Fly’s fast and flowy park machine, just the way we like it! Fly improved the 2020 Sion following Larry Edgar and Sem Kok preferences, using the Volcano FL 2 stem along with upgraded gearing using a 28-tooth sprocket for those of you guys who like to go fast! The Sion is also stacked with all of our Flybikes CNC parts, Fuego tires and more making it a top of the line complete.
from: Source
2020 Fly Sion Specs
Price
$720 from Source
Colors
Specs
| FRAME MATERIAL: FULL 4130 CRMO |
| WHEEL SIZE: 20″ |
| TOP TUBE LENGTH: 21″ |
| CHAIN STAY LENGTH: 13.4″ – Learn About Chain Stays Here |
| HEADTUBE ANGLE: 75° – Learn About Head Tube Angles Here |
| SEAT TUBE ANGLE: 71° |
| FORKS: FULL 4130 CRMO / 1 PIECE STEER TUBE / 27MM OFFSET |
| BARS: FULL 4130 CRMO / 9.25″ |
| STEM: FLY VOLCANO FL 2 / 6061-T6 ALUMINUM CNC MACHINED / 50MM |
| HEADSET: TREBOL / SEALED BEARING / CNC MACHINED / 6061-T6 ALUMINUM |
| BRAKE MOUNTS: Removable |
| BRAKES: TREBOL SPRINGHANGER / FORGED / 6061 T-6 ALUMINUM |
| FRONT HUB: TREBOL BUENO / SEALED BEARING / 3/8” FEMALE AXLE / 36H |
| FRONT RIM: FLY PIRAMIDE / DOUBLE WALL / 6061-T6 ALUMINUM |
| REAR HUB: TREBOL / SEALED BEARING / 14MM MALE AXLE / 36H / 9T |
| REAR RIM: FLY PIRAMIDE / DOUBLE WALL / 6061-T6 ALUMINUM |
| TYRES: FLY FUEGO 2.30 FRONT & REAR / 60 TPI / 120 PSI |
| SPROCKET: FLY TRACTOR / CNC MACHINED / 7075 ALUMINUM / 28T |
| CRANKS: TREBOL 3PC / 4130 CRMO / 175 MM ARM LENGTH |
| BB: MID / SEALED BEARING |
| PEDALS: FLY RUBEN GRAPHITE / NYLON – FIBERGLASS COMPOUND |
| SEAT: FLY SIERRA TRIPOD / 100% SYNTHETIC LEATHER / 7 MM THICKNESS |
| GEARING: 25/9 |
| WEIGHT: 11.3 KG. / 24.9 LB. |
Frame Geometry
A: Top Tube Length: 21″ – Learn what size is right for you here.
This is a long toptube. Perfect for tall riders.
Perfect for riders that are between 5’10” to 6’2″
B: Chain Stay Length: 13.4” – Learn About Chain Stays Here
This is a long chainstay. Longer Chain-stays give you more control when doing manuals and bunny hops. The long chainstay is good for control on trails and flowing park.
C: Head Tube Angle: 75° – Learn About Head Tube Angles Here
Steep head tube angles make the bike “snappy” meaning more responsive to fast turns.
A less steep head tube gives you more control.
D: Seat Tube Angle: 71°
E: Bottom Bracket Height: 11.75″
F: Stand over height: 9.25″
This is a taller standover.
A tall standover gives you more stability and will make bars, and t-bogs easier.
2020 Fly Sion Price
I think $720 is a lot of money for a bmx bike. The Sion is best for a rider who knows that they will stick to bmx for a long time. Even though it is expensive, it will last a long time.
2020 Fly Sion Quality
Lots of aftermarket parts show the true quality of the 2020 Sion. Expect this bike to last a long time because it is built with some good parts.
Fly Tractor Sprocket: An aftermarket sprocket that is thicker than most.
Volcano ST Stem: The brand new Volcano ST stem comes with a shorter 48mm reach and a taller, more street-friendly 35mm rise, to make your ride not only ultra-responsive but also amazing looking too.
Highlights
Solid for park riding
A lot of kids get bikes and know for sure that they want to be a park rider. If this sounds like you, you need the sion. The specs will make it easy to progress in the park.
Lowlights
Expensive
The 2020 Orion is over $700 and that’s a lot of money. Especially for a beginner.
Buy if you are learning:
- Any Trick!!!
- Especially flowing park and trails.
Don’t buy if you are learning:
- Solid for any kind of trick
2020 Fly Sion Conclusion 🤩
Are you a park rider with a good bag of tricks? Do you ride like Larry Edgar or Sem Kok? Do you want to learn to flow park like a pro? If you answered yes to any of these questions, get the 2020 Sion. If you have $720 laying around, get this bike. You won’t have to worry about breaking parts.
Frequently Asked Questions
This bike is great for riders between 5′ 8″ to 6′ 2″
This bike has crazy quality and I think it will last most mid-level riders a while. Probably two years.
Really good bike and a really good price. Fly makes good stuff.
The Fly Sion weighs about 24.9lbs
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