Fly’s Neutron bike is built for mid level riders to progress in park and dirt riding. While this bike is cheaper compared to the rest of Fly’s line…. It seems a little over priced. With tall bars, mellow offset forks, and a long chain stay you get lots of control for going fast and high. But can the parts withstand this level of riding?
⛔️ – Full Chromoly
⛔️ – Under $500
✅ – Double Wall Rims
⛔️ – Pegs
✅ – Fully Sealed Bearings
✅ – 3 pc. Cranks
⛔️ – Freecoaster
Highlights
- 28 tooth sprocket
- 3 pc. cranks
- Double wall rims
- 25 lbs
Images From https://www.flybikes.com/product/2020-neutron-gloss-black
2020 Fly Neutron Overview
The 2020 Neutron was built as an trails and bowl machine like the Orion, with a 1-piece steerer tube fork, Trebol Bueno cranks, a strong 510 chain, big bars and a tall 9.25” standover height that is made to feel right on any terrain. This mid-range complete features a Tri-moly frame with removable brake mounts, 100% chromoly bars, the ever popular 20.75” top tube length, a longer 13.60” rear end, a 32mm offset fork, 2.35” Trebol tyres and a 28-Tooth Aluminum Trebol sprocket for extra speed!
from: Source
2020 Fly Neutron Specs
Price
$540 from Source
Colors
Specs
| FRAME MATERIAL: 4130 CRMO DT, TT & CS / 1020 HITEN |
| WHEEL SIZE: 20″ |
| TOP TUBE LENGTH: 20.75″ |
| CHAIN STAY LENGTH: 13.5″ – 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 / 32MM OFFSET |
| BARS: FULL 4130 CRMO / 8.5″ |
| STEM: TREBOL TOP LOAD / FORGED / 6061-T6 ALUMINUM / 50MM |
| HEADSET: TREBOL INTERNAL SEALED BEARING |
| BRAKE MOUNTS: Welded |
| BRAKES: TREBOL SPRINGHANGER / FORGED / 6061 T-6 ALUMINUM |
| FRONT HUB: TREBOL BUENO / SEALED BEARING / 3/8” FEMALE AXLE / 36H |
| FRONT RIM: TREBOL / DOUBLE SIDE WALLED / 6061-T6 ALUMINUM / 36H |
| REAR HUB: TREBOL / SEALED BEARING / 14MM MALE AXLE / 36H / 9T |
| REAR RIM: TREBOL / DOUBLE SIDE WALLED / 6061-T6 ALUMINUM / 36H |
| TIRES: TREBOL 2.35 FRONT & REAR / 60 TPI / 65 PSI |
| SPROCKET: TREBOL / 6061 T-6 ALUMINUM CNC MACHINED / 28T |
| CRANKS: TREBOL 3PC / 4130 CRMO / 152MM ARM LENGTH |
| BB: MID / SEALED BEARING |
| PEDALS: FLY RUBEN GRAPHITE / NYLON – FIBERGLASS COMPOUND |
| SEAT: FLY NEUTRON TRIPOD/ 100% SYNTHETIC LEATHER / 7 MM THICKNESS |
| GEARING: 28/9 |
| WEIGHT: 11.35 KG / 25 LB |
Frame Geometry
A: Top Tube Length: 20.75″ – Learn what size is right for you here.
This is a medium toptube.
Perfect for riders that are between 5’4″ to 5’8″
B: Chain Stay Length: 13.6” – Learn About Chain Stays Here
This is a longer chain stay designed to give you more control when flowing parks and trails.
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 Neutron Price
Way Over Priced. I hope someone can explain to me what makes this bike worth $540 with a trimoly frame and lower quality parts. Maybe I’m missing something? However, other bikes with this level of quality only cost $350 to $450.
2020 Fly Neutron Quality
Sadly I think the quality is lacking. The most important part (frame) has a weaker version of metal built into it. That makes me sad.
Highlights
Solid for park/dirt riding
Even though I think the parts will break, the specs are really good for what the bike needs to do. I would compare it to the Fit TRL. Which has a 28 tooth sprocket, longer frame and bigger bars. This combo makes a good flow machine.
Lowlights
Bad Quality
From everything that I can tell.. This bike is way over priced. In my opinion this is a $350-$450 dollar bike. It has double wall rims but not a full chromoly frame. They skipped out on the after market parts that like the proton and orion had.
Buy if you are learning:
- Bars
- Whips
- 360
- medium airs/transfers
Don’t buy if you are learning:
- Street tricks
- Huge stair drops
- grinding rails
- 720
- flips
2020 Fly Neutron Conclusion 🤩
In all of the other 2020 Fly reviews, I talked so highly of them. This bike was disappointing to me. When I saw the $540 price tag and the “trimoly” bs frame I decided that you should get something else. For less than $400 I’d say this is an amazing bike, but $540 is wayyyy too much.
Frequently Asked Questions
This bike is great for riders between 5′ 4″ to 5’8″
It will last medium level riders around a year. It’s not the best quality like other fly bikes.
Really good bike and a really good price. Fly makes good stuff.
The Fly Neutron weighs about 25lbs
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