EUNORAU Defender 500W Full-Suspension Electric Mountain Bike – 48V 15Ah, Rear Hub, 27.5" Tire
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.
Which frame size fits me?
Both frames fit riders 5'3" to 6'4". The difference is how it feels:
| Frame | Usually the pick for |
|---|---|
| 17" | Riders under about 5'9", or anyone who wants an easier step-over |
| 19" | Riders about 5'10" and up, or anyone with long legs |
Between sizes? Go smaller if you'll be getting on and off a lot with gear. Go larger if you're mostly riding long distances seated.
Still not sure? Call the Ride Desk at (855) 970-3574 with your height and inseam and we'll tell you straight which one to order.
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.
See it in action
Real rides, field tests, and full reviews. Tap a video to play it right here.
Full Suspension Without the Full-Suspension Price
There's a reason serious mountain bikers ride full suspension.
When only the front of the bike can move, every root, rock, and washboard ripple in the trail goes straight up through the seat. Your back takes it, your legs take it, and after an hour you're more tired from being shaken than from pedaling. Rear suspension lets the back wheel move instead of you.
The problem is that many full-suspension e-bikes are priced like trail bikes. The EUNORAU Defender gives you suspension at both ends for a lot less, with a 500-watt motor, big 27.5-inch tires, and room for a second battery. It's built for dirt paths, gravel roads, and rough city streets, and for riders who want comfort without paying trail-bike money.
Suspension, Explained Simply
Up front, a fork with 100mm of travel (about four inches) and adjustable compression absorbs bumps before they reach your hands. You can stiffen it for smooth pavement or soften it for trails.
In back, an air rear shock lets the rear wheel move up and over obstacles. Air shocks are tuned with a pump, so you can match the firmness to your weight. Together, the two keep both tires on the ground, which means more grip, more control, and a lot less fatigue.
Tires That Handle Everything
The Chaoyang 27.5" × 3.0" tires hit a sweet spot. They're bigger and wider than standard mountain bike tires, so they grip loose dirt and gravel and roll over obstacles easily, but they're narrower than 4-inch fat tires, so they still roll efficiently on pavement.
Power, Battery, and Brakes
The 48V 500W rear hub motor makes 60 Nm of torque. Torque is the pulling force you feel climbing and starting from a stop. Use 5 levels of pedal assist through a Shimano 7-speed drivetrain, or the thumb throttle to ride without pedaling.
The 48V 15Ah battery holds about 720 watt-hours (think of it as the gas tank). Add an optional second battery and EUNORAU rates the bike at up to 80 miles in ideal conditions.
Hydraulic disc brakes with 180mm rotors give you strong, controlled stops with a light squeeze, and the levers cut the motor instantly. A 40-lux front LED and a taillight keep you visible, and the BC182 display works with EUNORAU's app.
It ships as a Class 2 e-bike, assisted up to 20 MPH, carries 300 pounds of rider plus cargo, weighs about 66 pounds, and is UL certified.
The Honest Part
- "Can it handle real mountain bike trails?" It's built for dirt paths, gravel, and moderate singletrack. Steep, technical terrain calls for a mid-drive trail bike like the SPECTER-ST.
- "Can every Defender take a second battery?" Not the larger 17Ah pack: EUNORAU says it doesn't fit the 17" frame. On the 19" frame, lock out the rear shock when you install it. If extra range matters, choose the 19" or ask us which second battery fits your size.
- "Is a hub motor good on climbs?" On moderate hills, yes. On long, steep climbs, a mid-drive that works through the gears is more efficient.
- "Does it come with a rack and fenders?" No. EUNORAU's rack and fender set is sold separately.
Is This Your Bike?
The Defender fits riders 5'3" to 6'4" in two frame sizes, 17" and 19", and comes in Army Green and Safari. Pick it if you want a comfortable, capable ride on mixed terrain and rough pavement at a friendly price.
Riding mostly in snow, sand, or mud? The DEFENDER-S 2.0 adds a second motor for all-wheel drive and 4-inch fat tires.
What Shows Up at Your Door
A factory-sealed EUNORAU Defender, mostly assembled, with the battery, charger, lights, and tools. EUNORAU's warranty covers the motor, 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 and frame size above, and let the suspension take the bumps.
Defender Questions
17" or 19" frame?
Riders under about 5'9" usually fit the 17"; taller riders, and anyone who wants the larger second battery, should choose the 19". Send the Ride Desk your height and inseam and we'll confirm.
Can I commute on it?
Yes. The full suspension makes rough city streets comfortable, and the lights and throttle make daily riding easy. It's a good fit if your commute mixes pavement with gravel or dirt paths.
What maintenance does full suspension need?
Check the rear shock's air pressure periodically, keep the fork stanchions clean, and inspect the brakes and battery connections. A quick check every few weeks keeps it riding smoothly.
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.
17" or 19" frame?
Riders under about 5'9" usually fit the 17"; taller riders, and anyone who wants the larger second battery, should choose the 19". Send the Ride Desk your height and inseam and we'll confirm.
Can I commute on it?
Yes. The full suspension makes rough city streets comfortable, and the lights and throttle make daily riding easy. It's a good fit if your commute mixes pavement with gravel or dirt paths.
What maintenance does full suspension need?
Check the rear shock's air pressure periodically, keep the fork stanchions clean, and inspect the brakes and battery connections. A quick check every few weeks keeps it riding smoothly.
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: 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, the frame size guide under the size buttons, 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.
