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The Neutron features a lot of upgrades from our Electron model to offer the most complete range possible.
The frame is Trimoly, with 100% CrMo bars and forks that feature the new Volcano inspired design that we are really psyched on.
The tires really stand out on this bike, so we are now including Ruben 2.35” tires and the new Ruben 2 grips to really dial this bike in.
The 2021 Neutron is available in Sierra Forest Green with flat black parts, and Flat Black with the Brown seat that looks great.
RHD: Right Drive Side (Sprocket on the right side)
LHD: Left Drive Side (Sprocket on the left side)
|Trimoly frame (not full chromoly)|
|Trebol top load stem|
|Fly Ruben 2.35" tires|
|FRAME 4130 CRMO DT, TT & CS / 1020 HITEN / 20.75" / REMOVABLE BRAKE MOUNTS|
|FORK INTEGRATED CONE SHAPE DESIGN / FULL 4130 CRMO / 1 PIECE STEER TUBE / 32MM OFFSET|
|BARS FULL 4130 CRMO / 9"|
|GRIPS FLY RUBEN 2 / 160 MM LONG|
|STEM TREBOL TOP LOAD / FORGED / 6061-T6 ALUMINUM / 50MM|
|HEADSET TREBOL INTERNAL SEALED BEARING|
|LEVER TREBOL RIGHT / FORGED / 6061 T-6 ALUMINUM|
|BRAKE TREBOL SPRINGHANGER / FORGED / 6061 T-6 ALUMINUM|
|CRANKS TREBOL 3PC / 4130 CRMO / 170MM ARM LENGTH|
|BOTTOM BRACKET MID / SEALED BEARING|
|SPROCKET TREBOL / 6061 T-6 ALUMINUM CNC MACHINED / 28T|
|PEDALS FLY RUBEN GRAPHITE / NYLON - FIBERGLASS COMPOUND|
|CHAIN 510 TYPE / 74 LINKS|
|RIMS TREBOL / DOUBLE SIDE WALLED / 6061-T6 ALUMINUM / 36H|
|FRONT HUB TREBOL BUENO / SEALED BEARING / 3/8” FEMALE AXLE / 36H|
|REAR HUB TREBOL / SEALED BEARING / 14MM MALE AXLE / 36H / 9T|
|TIRES FLY RUBEN 2.35 FRONT & REAR / 60 TPI / 110 PSI|
|SEAT FLY NEUTRON TRIPOD/ 100% SYNTHETIC LEATHER / 7 MM THICKNESS|
|POST TREBOL TRIPOD / FORGED & CNC MACHINED / 6061-T6 ALUMINUM / 135 MM|
|WEIGHT 11.35 KG / 25 LB|
This is a medium toptube.
Perfect for riders that are between 5’6″ to 6'3"
Getting a top tube that is taller than suggested will make the bike feel more controlled and less responsive
Getting a top tube size that is smaller than normal will make the bike feel a lot more snappy and responsive.
This is a long chainstay.
A long chain stay will make the bike feel controlled.
A short chain stay makes the bike feel twitchy. Spins will be easy, but airing and jumping might feel hard to control.
A long chain stay will make the bike feel really controlled. Spins will feel sluggish, but manuals and air tricks will feel nice because it will be more stable.
Steep head tube angles make the bike “snappy” meaning more responsive to fast turns.
A less steep head tube gives you more control.
This is a tall standover.
A tall standover gives the bike a responsive and snappy feeling. Good for barspins and controlled riding.
Riding a tall rise, will give you more leverage on the bike. Making it easier to pull back and lift the front wheel up.
This is a medium width.
Narrow bars make barspins easier.
Wide bars give you more control and stability when steering.
As far as I know, there is a sweet spot for backsweep. Too much will make the bike feel weird, and too little will make the bike unstable. It seems like the sweet spot is around 11º to 12º. If you need something a little more aggressive and straight feeling, go for 10º, but only do this if 11º is uncomfortable.
This is a normal upsweep!
There is a lot of discussion about 1º upsweep vs. 4º upsweep. Some people are running experiments and testing if the greater upsweep will make drops feel better. It seems like a lot of street riders run 4º to 5º upsweep. This helps for wrist pain and lessens the impact of big drops.
So I actually don't really recommend this bike. But it isn't because it is low quality, it's actually decent quality for a beginner bike. The thing is, that the bike is overpriced.
You can get a comparable quality bike like the Kink Gap for much less than $540.
The 2021 Neutron will last good for a beginner rider. But for a mid to high-level rider, you will be breaking parts left and right.
The biggest thing that concerns me is the trimoly frame. One time, I had a trimoly frame, and as I was learning 360's the back end of my frame started to bend from constant impact.
The Neutron is best for a beginner rider. It has enough quality to last while you learn some beginner tricks, but not while you do big tricks. I would recommend looking at other beginner or mid-level bikes to ensure you make the right purchase.
With that being said, Fly is a really good brand who has a lot of support. and if you love Fly and are riding at a beginner level, the Neutron will fit good for you. Just make sure you have enough money.