EUNORAU FLASH AWD 1.0 Dual-Motor AWD Fat Tire Electric Bike – 1500W, 52V 16Ah, 20" x 4.0" Tires, Triple-Battery Ready
Buy today and pay in 4 or more payments starting at 0% APR with Shop Pay Installments.
Rates from 0–36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required. State notices to consumers: affirm.com/licenses.
Will this bike fit me?
Made for riders 5'2" to 6'4" tall.
Near the top or bottom of that range? That's where fit matters most, so check with us before you order.
Still not sure? Call the Ride Desk at (855) 970-3574 with your height and inseam and we'll tell you straight.
Your Street Kit: $148 of gear, on us.
Three things most riders end up buying in the first month. With this bike, you won't have to.
Fender & Lampshade KitKeeps road spray off you and sharpens the headlight beam for night rides.
$79FREE
Aluminum Foot PlatesA wide, solid platform so your feet stay planted.
$29FREE
Genesis HelmetLightweight, adjustable, ready on day one.
$40FREE
How do I get my kit?
It ships with your bike automatically. Nothing to add, no code to enter, and it never adds a cent to your total. You'll see "Free Street Kit: Included" under your bike in the cart and on your order confirmation. It ships free and may come in its own box, so it can arrive a day or two apart from your bike.
One kit per bike, while kit supplies last.
Authorized EUNORAU dealerGenuine, brand-new bikes with full factory warranty
Every bike we sell is new and factory-sealed, from brands we're authorized to carry. You get the complete manufacturer warranty, exactly as intended.
Price match guaranteeFind it lower at another authorized dealer? We'll match it.
If another authorized EUNORAU dealer advertises this exact bike for less, send us the link and we'll match the price. Ask before you order, or within 7 days after your order and we'll refund the difference. See how price match works
2YR 24-month+ warranty, 10-year frameIf something goes wrong, we handle the claim for you
Send the Ride Desk a message and a short video. We'll help figure out what's wrong and take the warranty claim from there, so you're never left sorting it out alone.
EUNORAU covers original parts under its 24-month+ limited warranty and the frame for 10 years. To keep coverage, register the bike with EUNORAU after delivery (we'll send you the link) and schedule a check-up after the first year. Wear items and labor aren't covered.
14-day returnsTime to make sure it's the right bike
Start a return within 14 days of delivery. The bike should have under 10 miles on it and be in its original box. See full return terms. If it arrives damaged or with a defect, contact us right away and we'll work it out with you.
Free delivery in 7–10 daysSignature required. Damaged in transit? We handle it.
Your bike ships FedEx or UPS to the lower 48, and a signature is required so it's never left on the porch. Before you sign, check the box. If it's torn or crushed, note it on the delivery slip and send us photos the same day. We'll take it from there with the carrier.
Pay over timePay in 4 or more payments, starting at 0% APR
Choose Shop Pay Installments at checkout to see your options and rate before you commit. Checking your eligibility won't affect your credit score, and your card details are never shared with us.
Rates from 0–36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required.
Ride it the day it arrivesArrives mostly assembled, tool kit included
No bike shop needed. Most of the job is attaching the handlebar, front wheel, pedals, and seat, and the manufacturer's step-by-step video walks you through it. Charge the battery fully, set the riding mode for where you'll ride, and you're out the door. Stuck on a step? Send the Ride Desk a photo and we'll talk you through it.
EUNORAU FLASH AWD 1.0 Dual-Motor AWD Fat Tire Electric Bike – 1500W, 52V 16Ah, 20" x 4.0" Tires, Triple-Battery Ready
Beach Sand, Snow Days, Steep Streets: Two Motors, No More Excuses
Fat tires get you a long way.
Then you hit the soft stretch of the beach path. Or the side street nobody plowed. Or a steep hill in the rain with wet leaves on it. The rear wheel spins, the front wheel just rolls along doing nothing, and you're off the bike pushing.
The EUNORAU FLASH AWD 1.0 fixes that with a simple idea borrowed from four-wheel-drive trucks: a motor in each wheel. When the back tire slips, the front one is still pulling. And because it's built on the long-range FLASH frame, the bike that gets you through the rough stuff also gets you all the way home.
Two Motors, 184 Nm: What That Means
The FLASH AWD runs a 52V 750W hub motor in the front wheel and another in the rear, 1,500 watts combined. Each makes 92 Nm of torque, for 184 Nm combined. Torque is the pulling force that gets you moving from a stop, especially on a hill or with a load. A typical commuter e-bike makes 55 to 65 Nm, so this has roughly three times the pull, split across both wheels.
Splitting it matters. Power only helps if the tire can grip. With two driven wheels, each tire only has to put down half the work, so it's far less likely to break loose on sand, snow, wet grass, or loose gravel.
A thumb throttle moves you without pedaling, and there are 5 levels of pedal assist.
Simple by Design
The FLASH AWD is a single-speed. No derailleur to bend, adjust, or replace. That's a deliberate trade: two strong motors supply the help that gears normally would, and you get a bike with almost nothing to maintain.
Up front, an EXSHO STRONG-DH fork with 80mm of travel (about three inches) takes the edge off potholes and curbs, with compression adjustment and a lockout. The CST 20" × 4.0" fat tires, about twice as wide as a normal bike tire, add grip and cushion.
A Battery System You Can Grow
It ships with a 52V 16Ah LG-cell battery, about 830 watt-hours (think of it as the gas tank). The frame has bays for two more: a 21Ah top-tube pack and a 17Ah down-tube pack, sold separately. EUNORAU rates the range at up to 65 miles on one battery, 135 on two, and 220 on all three, at the lowest assist level in ideal conditions. Running both motors hard in sand or snow uses more. A 4-amp charger is included for quicker top-ups.
Brakes, Lights, and Load
Hydraulic disc brakes with 180mm rotors stop you smoothly with a light squeeze, and the levers cut both motors instantly. The taillight brightens when you brake. The sunlight-readable BC281 display connects to the EUNORAU GO app.
It carries 440 pounds of total payload, rider plus cargo. EUNORAU's spec sheet lists a 20 MPH maximum speed as delivered, and the bike is UL certified.
The Honest Part
- "Do I really get 220 miles?" Only with all three batteries, two of which are sold separately, at the lowest assist. On the included battery, plan on less than 65.
- "Is there rear suspension?" No. It's a hardtail; the fat tires cushion the rear. For a softer ride on rough trails, the full-suspension FLASH 2.0 is better.
- "Is single-speed a problem on long climbs?" On short, steep hills, the two motors handle it. On long, sustained climbs, a geared mid-drive like the FLASH 2.0 is more efficient.
- "How heavy is it?" 82 to 92 pounds depending on how many batteries you run. Plan on a heavy-duty hitch rack.
- "Does it come with fenders or a rack?" No. EUNORAU sells both separately.
Which FLASH Is Right for You?
Choose the FLASH AWD 1.0 if you regularly ride sand, snow, wet grass, or steep grades and want maximum traction with minimal maintenance. For mostly city riding on decent roads, the FLASH LITE 2.0 costs less. For full suspension and an 8-speed mid-drive, choose the FLASH 2.0.
The FLASH AWD fits riders 5'2" to 6'4" and comes in Moon Black and Lunar Dust.
What Shows Up at Your Door
A factory-sealed EUNORAU FLASH AWD 1.0, mostly assembled, with the main battery, 4A charger, lights, pedals, and tool kit. The free kit shown above ships with it. EUNORAU's warranty covers the motors, battery, and electronics for 24 months and the frame for 10 years, and our Ride Desk handles any claim for you. Shipping is free to the lower 48, delivery takes about 7–10 business days, and you have 14 days to return it if it isn't right.
Pick your color above, and stop pushing the bike through the stuff you meant to ride.
FLASH AWD Questions
Will it really ride on beach sand?
On firm or moderately soft sand, AWD and 4" tires make a real difference. Lowering tire pressure helps further. Very deep, dry sand is hard for any bike.
Can I ride it in winter?
Yes, AWD and fat tires help a lot on snow. Store and charge the battery indoors, and expect less range in freezing temperatures.
Can I add batteries later?
Yes. The frame has bays for a 21Ah top-tube battery and a 17Ah down-tube battery. Start with one and add range when you need it.
Why ride with VortexCycles
Buying an e-bike online takes trust. Here's exactly what you get when you buy from us.
Authorized dealer for Revi Bikes, EUNORAU, Rattan, HappyRun, and Yamee. Every bike is new, factory-sealed, and backed by the full manufacturer warranty.
Coverage, spelled out. Manufacturer warranties run 12 to 24 months depending on the brand, with EUNORAU frames covered for 10 years. They cover manufacturing defects, not wear parts like tires, brake pads, and chains. Each bike's exact coverage is listed on its page, and optional Product Protection adds accidental-damage coverage.
Help from start to finish. Get straight answers on fit, power, and setup before you order, and support with warranty claims after it arrives.
Ships free from a U.S. warehouse. Most bikes arrive in 7–10 business days by FedEx or UPS to the lower 48. Tracking is emailed as soon as your bike ships, and a signature is required on delivery.
The two minutes that protect your purchase. Before you sign, walk around the box. If it's torn, crushed, or punctured, write it on the delivery slip and photograph it before you open it. A clean signature makes a damage claim much harder to win. Some brands require damage reports right away, so open the box the day it arrives. We'll work the claim with you.
14-day returns. Start a return within 14 days of delivery. See full return terms.
Pay over time. Shop Pay Installments shows your options at checkout, and checking won't affect your credit.
Secure checkout. Payments run through Shopify's encrypted checkout, and we never see or store your full card number.
Questions? Chat with us, call (855) 970-3574, or email info@vortexcycles.bike, Monday–Friday, 9am–5pm CT. We reply to every email within one business day.
Quick answers
The questions riders ask us most, answered up front. Want to talk it through? The Ride Desk is glad to help by chat or at (855) 970-3574.
Will it really ride on beach sand?
On firm or moderately soft sand, AWD and 4" tires make a real difference. Lowering tire pressure helps further. Very deep, dry sand is hard for any bike.
Can I ride it in winter?
Yes, AWD and fat tires help a lot on snow. Store and charge the battery indoors, and expect less range in freezing temperatures.
Can I add batteries later?
Yes. The frame has bays for a 21Ah top-tube battery and a 17Ah down-tube battery. Start with one and add range when you need it.
Why buy from Vortex instead of somewhere else?
It's the same factory-sealed EUNORAU bike with the full manufacturer warranty. What you get on top: the free gear kit shown above, our price match (find it lower at another authorized dealer and we'll match it), and the Ride Desk. If anything goes wrong, you send us a message and a short video and we handle the warranty claim with EUNORAU for you, so you're never stuck in a support queue alone.
When will it arrive?
Usually in 7–10 days. Shipping is free to the lower 48 by FedEx or UPS, and a signature is required so your bike is never left on the porch. You'll get tracking by email as soon as it ships.
How much assembly is there?
The bike arrives mostly assembled. You'll typically attach the handlebar, front wheel, pedals, and seat, and the manufacturer's step-by-step video walks you through it. Get stuck? Send the Ride Desk a photo and we'll talk you through it.
Will it fit me, and can I handle it?
Check the specs above and the size chart in the photos. If you're near the edge of the height range, between frame sizes, or unsure about the weight, send us your height and inseam. We'll tell you straight, even if the answer is a different bike.
How far will it really go?
The range in the specs is the manufacturer's test number, usually measured with a light rider in a low assist level on flat ground. Heavier riders, hills, wind, cold, and throttle use all shorten it. Tell us your weight and your usual route, and we'll give you a realistic estimate.
Is it legal where I ride?
The class rating and top speed are in the specs below. In most states, an e-bike ridden within its Class 1, 2, or 3 limits doesn't need a license, registration, or insurance, but trail and town rules vary, so check yours. Any higher-speed modes are for private property only.
How should I charge and store it?
Use the included charger, charge on a hard surface away from anything flammable, and unplug once it's full. For longer storage, keep the battery partly charged in a cool, dry place and top it up now and then. Your owner's manual has the exact guidance for your model.
Can I pay over time?
Yes. Choose Shop Pay Installments at checkout: buy today and pay in 4 or more payments starting at 0% APR. Checking your eligibility won't affect your credit score. Rates from 0–36% APR. Payment options through Shop Pay Installments are subject to an eligibility check and are provided by these lending partners: affirm.com/lenders. Options depend on your purchase amount, and a down payment may be required.
Talk to the Ride Desk. Real people who know these bikes. Tap the chat bubble or call (855) 970-3574, Monday–Friday, 9am–5pm CT.
