Nexvey Flash Pro
A 60-volt, 5,000-watt e-moto on 17-inch front and 14-inch rear wheels. Nexvey rates it at 55 mph. We measured 44 on the GPS with a 195 lb rider aboard.
Make It Yours
Colour Options
Check availability →
Watch the Review
Full Video Review
Watch on YouTube →
From the Review
Out on the Trail
Up Close
Detail Gallery
The Engineering
Built On Better Technology
From Flash to Flash Pro
Every number on the spec sheet went up.
60 Volts Instead of 48
The battery moves from a 48V 22.5Ah pack to 60V 27Ah. Nominal motor power rises from 2,000W to 3,000W, and peak output from 4,000W to 5,000W.
Bigger Wheels, Taller Seat
A 17-inch front and 14-inch rear wheel replace the smaller original setup, and the seat sits at 75 cm. The larger front wheel rolls over ruts and potholes that swallow a smaller one.
Rated Higher On Both Counts
Nexvey's rated top speed goes from 35 mph to 55, and rated range from 35 miles to 50. An upgraded 67.2V 3A UL-certified charger comes in the box.
Four Power Modes
Three speed caps and a torque mode on top.
Modes One Through Three
Mode one cuts power at 15 mph and mode two at 25, which is useful anywhere speed limits apply. Mode three takes the ceiling off. In our acceleration test it pulled 29 mph by the 60-foot mark and held 31 mph up a 15 percent grade.
Hold Plus for Mode Four
Holding the plus button in mode three unlocks what Nexvey calls the instant wheelie mode. It is not a hold-the-angle system, just a lot more torque delivered immediately.
Throttle You Can Modulate
The twist throttle is detailed enough to crawl along in the highest mode or open it up, with usable control at the bottom, the middle and the top of its travel.
Brakes and Rubber
DOT-grade stoppers, proper dirt bike tread.
Four-Piston Front, Single-Piston Rear
Thick lines feed a four-piston front caliper and a single-piston rear, both on thick rotors that resist warping. These are DOT brakes rather than the mountain bike parts these little e-motos often ship with.
Stopped With Room to Spare
Our braking test is normally run from 28 mph. The Flash Pro came in hot at 30 and still stopped a bike and a half short of the marker.
17/14 Off-Road Tires
Aggressive knobby tread at both ends, on thick motorcycle-style spokes. Quiet enough on pavement and genuinely grippy once you leave it.
Security & Ride Modes
Simple Where It Counts — NFC Ignition and Four Modes
NFC card + park mode + four power modes (no app required)
The Flash Pro will not wake up until you hold the NFC card against the display. It then sits in park mode, so the bike cannot take off before you are on it with a brake covered.
From there the plus and minus buttons step through three speed-capped modes, and holding plus unlocks the fourth. The display stays deliberately basic: battery bars, actual pack voltage, speed, an odometer, and a readout you can cycle through for current, distance, watts and time. Reading real voltage rather than trusting six battery bars is the useful part, and it is not something every bike at this price gives you.
Find Your Fit
Size & Fittings
Nexvey Flash Pro 17″ front · 14″ rear
Nexvey's own dimension drawing, scaled against a 5'8″ (175 cm) rider.
And the real thing: Ben is 5'9″, just past the top of Nexvey's recommended range.
Will It Fit You?
- Recommended rider height55.1″ – 68.9″
(4'7″ – 5'9″) - Recommended age13 and up
- Seat height29.5″ (75 cm)
- Overall height40.6″
- Overall length61.4″
- Wheels17″ front / 14″ rear
- Max rider load265 lbs (120 kg)
- Bike weight140 lbs with battery
Ben rode it at 5'9″ and 195 lbs in gear, right at the ceiling of both the height range and the 265 lb load rating. It still fit him comfortably, with room at the bars and no cramping at the knees, but that load figure is also what the suspension is sprung for, which is why it feels soft under a fully grown adult. A rider around 100 to 120 lbs is who this bike was built and sprung for. Between the Yozma IN 10 and the IN 10 Pro on size, in Ben's words: a tighter package with softer suspension, but bigger wheels and more power.
Plan Your Ride
Your Range, Not Mine
No cranks and no second battery bay on this one, so the only questions that matter are how fast you ride it, what the ground looks like and what you weigh. Set those and you get the window to plan a ride inside.
The Numbers
Full Specifications
Source: nexvey.com →⚡ E-System
🏁 Performance
🔧 Suspension & Brakes
⚙️ Frame & Fit
The Bike Cave Verdict
Ben's Take
“I was like, no way. There's some 48 volt bikes that go for 1,500 bucks, so there's no way they snuck in a 60 volt, 5,000 watt motor into something that's 1,500 and change. But they did it. And the quality's there, man. It's a very nicely put together bike. Nothing rattles, it's very balanced. There's no speed wobble, there's a ton of power.”
“If you're a younger, smaller rider looking into riding e-motos like this and you don't have a ton of money to spend, this is a really, really good option.”
👍 What I loved
- 60V and 5,000W for $1,599, which undercuts every bike with the same spec
- 44 mph measured with a 195 lb rider, well past what I expected
- DOT four-piston front brake that stopped short from 30 mph
- 17-inch front wheel rolls over what swallows a smaller one
- Throttle modulation and grips are the best I have felt on a little e-moto
- Nexvey had a replacement part shipped within three hours of me reporting it
👎 What to know
- Suspension is tuned soft for a light rider and has almost no adjustment
- Front end wanders under power at close to 200 lbs
- 50 miles is a gentle-riding number. Ride it hard and expect closer to half
- Pegs are cheap and worth replacing before you ride it properly off-road
- Display is dim in daylight, though you will not be looking at it
Frequently asked questions
How fast is the Nexvey Flash Pro?
Nexvey rates it at 55 mph. On our GPS, with a 5 foot 9 rider weighing 195 lbs in full gear on flat pavement, it reached 44 mph. That is a good deal more than Ben expected at this price, and a lighter rider will see more, because Nexvey's number assumes a teenager rather than a grown adult.
How far does it actually go on a charge?
Nexvey claims up to 50 miles. Ben covered 18 miles of deliberately hard riding, including top speed runs, hill climbs and acceleration tests, and was just under half battery at 56.2 volts. His estimate for that kind of riding is somewhere in the high twenties, which lines up with the rough rule of a mile per amp-hour on a 27Ah pack. Ride gently and you will do better.
Who is the Flash Pro built for?
Nexvey rates it for riders 13 and up, with a 75 cm seat height, a recommended rider height of 55 to 69 inches and a 265 lb maximum load. That load rating is also what the suspension is tuned around, so it suits a lighter rider best. Ben's summary is that a teenager getting into off-road riding, or a smaller adult, is getting a lot of bike for the money.
What is the seat height, and how much does it weigh?
The seat sits at 29.5 inches (75 cm) and the bike weighs 140 lbs with the battery installed. It is 61.4 inches long and 40.6 inches tall, on a 17-inch front and 14-inch rear wheel. Nexvey's recommended rider height is 4'7" to 5'9", and Ben rode it at 5'9", right at the top of that range.
What are the downsides?
The suspension, mostly. It is soft and there is next to nothing to adjust: preload on the rear spring and nothing at all up front. At close to 200 lbs Ben found the front end wandering under power and would not take it on a track. The pegs are cheap, and the display is dim in daylight, though he pointed out you are not looking at it while you ride.
Flash Pro or the standard Flash?
The Flash Pro is the bigger and faster one. It runs 60V 27Ah against the Flash's 48V 22.5Ah, peaks at 5,000W instead of 4,000W, and moves to a 17-inch front and 14-inch rear wheel with a taller seat. The standard Flash is $1,049 and suits a smaller or younger rider.