2020 Fly Neutron Review

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

How tall do you have to be for this bike?

This bike is great for riders between 5' 4" to 5'8"

How long will this bike last me?

It will last medium level riders around a year. It's not the best quality like other fly bikes.

Is this a good bike?

Really good bike and a really good price. Fly makes good stuff.

How much does it weigh?

The Fly Neutron weighs about 25lbs

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