Eunorau Defender Full-Suspension Fat eBike
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Eunorau Defender Full-Suspension Fat eBike
The Eunorau Defender is a full-suspension fat-tire electric bike built for rough ground at a mid-range price. Eunorau rates it at a 48V 500W rear hub motor with 60 N.m, a 300 lb payload, riders 5'3"–6'4", and 20 mph as a Class 2 e-bike — UL certified, 66 lbs. Range is 40 miles on the 48V 15Ah Samsung pack and up to 80 miles with the optional second battery. $1,599 with free shipping in the lower 48.
- 15 AhBattery
- 80 miMfr. range
- 20 mphMfr. top speed
- 27.5×3.0Tires
Class, speed & certification
E-bike class
Class 2 Speed limited Unlockable
Class rules are set by state and local law in the U.S. Check the rules where you ride — some paths and trails restrict Class 3.
Top speed
20 MPH (32 KM/H) under speed limited/locked
UL certified
Yes — as published by Eunorau. UL listing for the battery and electrical system is what many U.S. cities, insurers, and apartment buildings now ask for.
Who the Defender Full-Suspension Fat is for
Buy it if
- Riders who want genuine dual suspension without crossing $2,000
- Mixed surfaces — gravel, dirt, snow, sand, and broken pavement
- Anyone who values braking and comfort over outright speed
- Riders who need a UL-certified battery to charge indoors
Look elsewhere if
- You want a mid-drive for steep sustained climbing — this is a rear hub motor, and the SPECTER-S is the mid-drive
- You want a rack and fenders in the box — on the Defender both are listed as optional extras
- You have a 17" frame and want the big second battery — Eunorau notes the 17Ah pack is not compatible with the 17" Defender
The motor
Eunorau specifies 48V500W Rear Motor with 60N.m.
Battery and range
Battery: 48V15Ah, Optional 15Ah/17Ah battery (Dual battery design). Eunorau rates the range at Up to 80 miles (with dual batteries). Real-world range moves with rider weight, terrain, temperature and throttle use.
Suspension
Front: ZOOM 100mm travel suspension fork. Rear: EXA KS/A5, 165mm.
Brakes and tires
Brakes: EUNORAU Design Hydraulic disc Brakes. Tires: CHAOYANG Tires 27.5 x 3.0.
Size, fit and capacity
Eunorau publishes a total payload capacity of 300 lbs / 136kg. Recommended rider height is 5'3" ~ 6'4". The bike weighs 66 lbs.
The honest ledger
Green flags
- Full suspension at $1,599 — a ZOOM 100 mm travel fork plus an EXA KS/A5 165 mm rear shock
- UL certified, per Eunorau — increasingly what US cities, insurers and apartment buildings require
- Class 2 and speed-limited, so it's allowed anywhere Class 2 is, with Eunorau noting the limit is unlockable
- 300 lb payload and a 5'3"–6'4" fit range, both published by Eunorau
- Hydraulic disc brakes front and rear, 180 mm, with motor cut-off sensors in the levers
- 66 lbs — light for a full-suspension fat bike, and a Samsung-cell battery named by brand
Red flags
- 40 miles on the standard battery; the 80-mile figure needs the optional second pack, bought separately
- The 17Ah second battery is not compatible with the 17" frame — Eunorau states this explicitly, so size matters if you want maximum range
- Rear rack and fenders are optional — budget for them if you plan to commute or haul
- The 7-speed Shimano Altus drivetrain with a 14–28T cassette is entry-level
- Only two frame sizes (17" and 19") and two colorways
How the Defender Full-Suspension Fat compares
All figures below are Eunorau's own published numbers. A blank cell means Eunorau does not publish that spec for that model — left empty rather than guessed.
| Spec | Defender Full-Suspension Fat | FAT-HD 1.0 Pro Mid-Drive Fat eBike (Hunter X7) | FAT-HD 2.0 Mid-Drive Fat eBike (Hunter X7) |
|---|---|---|---|
| Price | $1,599 | $1,999 | $2,399 |
| Motor | 48V1000W BAFANG brushless mid motor with 160 N.m torque | 48V1000W BAFANG brushless mid motor with 160 N.m torque | |
| Battery | 48V15Ah, Optional 15Ah/17Ah battery (Dual battery design) | 48V/25Ah | 48V15Ah with SAMSUNG Battery Cells |
| Range (mfr.) | Up to 80 miles (with dual batteries) | Up to 60 Miles | Up to 80 miles (with secondary battery) |
| Top speed (mfr.) | 20 MPH (32 KM/H) under speed limited/locked | 20MPH | |
| Front suspension | ZOOM 100mm travel suspension fork | RST GUIDE 100mm Travel | RST Suspension Fork |
| Rear shock | EXA KS/A5, 165mm | ||
| Drivetrain | SHIMANO ASLM315 7RC-7S | Shimano Derailleur 7 speed gear shift system | SHIMANO Push-Button 9 speed |
| Tires | CHAOYANG Tires 27.5 x 3.0 | Kenda Tires 26" x 4.0" | KENDA 26 x 4.0" |
| Payload | 300 lbs / 136kg | 375 lbs | |
| Frame | Aluminum Alloy 6061 with Front Suspension Fork | 6061 Aluminum Alloy | Aluminum alloy 6061 |
Source: each manufacturer product page on eunorau-ebike.com, pulled 2026-08-13 (source-specs_20260813.json). Blank = not published by Eunorau.
Full specifications
| Battery | 48V15Ah, Optional 15Ah/17Ah battery (Dual battery design) |
| Range | Up to 80 miles (with dual batteries) |
| Hub Motor | 48V500W Rear Motor with 60N.m |
| Total Payload Capacity | 300 lbs / 136kg |
| Recommended Rider Heights | 5'3" ~ 6'4" |
| Maximum Speed | 20 MPH (32 KM/H) under speed limited/locked |
| * Note | The second 17ah battery is not compatible with 17" DEFENDER; To utilize the 17Ah second battery on the 19" DEFENDER, it's necessary to lock out the rear shock. |
| Charger | US standard 2.0 A smart charger |
| Controller | 48V * 20A |
| Display | BC182 Display, EUNORAU APP Support |
| Weight | 66 lbs |
| Pedal Assist Intelligent | 0~5 level pedal assist |
| Box Dimensions | (cm) 170 L x 32.5 W x 85 H |
| * Note | The bike is with speed limit and power limited to 20 MPH/32 KPH for on-road legal use. Riders can UNLOCK the speed limit on the display for off-road use to reach 28 miles per hour. Eunorau will not be held liable for riders that ride illegally configured bikes on-road. |
| Tires | CHAOYANG Tires 27.5 x 3.0 |
| Brakes | EUNORAU Design Hydraulic disc Brakes |
| Brake lever | Hydraulic Brakes Lever with motor cutoff switch |
| Brake Rotor | 180mm front and rear |
| Rear Light | Taillight |
| Shifter | SHIMANO ASLM315 7RC-7S |
| Throttle | Thumb throttle |
| Stem | EUNORAU TDS-D507G-8FOV |
| Crank | 170mm forged alloy |
| Cassette | 14-28T |
| Fork | ZOOM 100mm travel suspension fork |
| Shock | EXA KS/A5, 165mm |
| Saddle | Comfortable Saddle, height to ground 35.0"-40.9" |
| Pedal | High Quality Nylon Pedals |
| Frame | Aluminum Alloy 6061 with Front Suspension Fork |
| Front Light | 40LUX LED light |
| Tool | Included |
| Chainring | 44T aluminum chain wheel with protection |
| Rims | 27.5 inch Black Alloy |
Specifications as published by Eunorau at eunorau-ebike.com/products/defender, verified 2026-08-13. We publish the manufacturer's figures as given and do not add specs Eunorau does not state. Found an error? Email support@redtailebikes.com.
Warranty
| Component | Coverage |
|---|---|
| Frame | 10 years |
| Battery | 24 months |
| Motor | 24 months |
| Electrical components | 24 months |
What it covers
Manufacturing defects in Eunorau's original parts and components.
Eunorau states it continues to support the product after the warranty period as a manufacturer courtesy, and may ask only for shipping costs on replacement parts.
What you must do
- You are the original purchaser — the warranty does not transfer
- Proof of purchase (your Redtail order confirmation)
- Product registration with Eunorau right after purchase
- An e-bike check-up by a Eunorau specialist or dealer after the first year of use
Not covered
- Ordinary wear and tear — brake pads, rotors, spokes, grips, shifters, brake cables and casings, tires and tubes, chains, chainrings, cassettes, transmission gears
- Labor charges for part replacement
- Corrosion from moisture or heat, and cosmetic deterioration of the finish
- Damage from accident, abuse, stunt riding, racing, improper storage, or neglect
24-Month+ Limited Warranty issued by Eunorau Bikes, a Nevada corporation. Bikes bought for commercial use — rental fleets, delivery, sharing programs — get a 50% reduced warranty period. Full terms are published by Eunorau at eunorau-ebike.com/pages/warranty. Redtail coordinates warranty claims for bikes bought from us, so send it to us rather than to Eunorau: support@redtailebikes.com.
Manuals & documentation
In the box
Eunorau's spec sheet for this model lists a printed manual and a tool kit as included.
Any other document
Eunorau publishes display, controller, shock and accessory manuals across several files. Tell us which one you need and we will send you our copy, so you are not hunting through a supplier download hub.
Eunorau publishes display and component manuals rather than a per-bike user manual. We link only the manual Eunorau lists against this exact model. Need a document we haven't linked? Email support@redtailebikes.com and we'll request it from Eunorau.
Shipping, returns & support
Shipping
Free shipping on every electric bike within the contiguous United States (lower 48).
Orders are prepared and dispatched within 1–3 business days. Most e-bikes arrive within 5–10 business days after dispatch.
Ships via UPS, FedEx, or LTL freight for larger items, with tracking emailed at dispatch. Freight deliveries may need a scheduled appointment and a signature.
On delivery
Inspect your shipment at delivery. Damage, defects, or incorrect items must be reported with photos within 48 hours.
If a bike arrives dead, won't charge, throws an error code, or has a faulty component, it is covered under the manufacturer warranty and Redtail coordinates repair or replacement remotely.
Returns
Change-of-mind returns accepted only on unopened, factory-sealed items requested within 72 hours of delivery, with a 15% restocking fee plus return shipping. Once a box is opened or a bike is ridden, it is no longer eligible.
Order cancellations carry a 3% transaction fee, because card-processing fees are non-recoverable.
Alaska, Hawaii, U.S. territories, P.O. boxes, and remote areas may incur extra charges or be excluded — contact us before ordering. Full terms: Shipping Policy · Refund & Return Policy.
Frequently asked questions
How far does the Eunorau Defender Full-Suspension Fat go on one charge?
Eunorau rates the Defender Full-Suspension Fat at Up to 80 miles (with dual batteries). That figure assumes the optional second battery, bought separately. Manufacturer range figures are measured under favorable conditions — expect less with hills, heavy loads, cold weather or heavy throttle use.
How fast is the Eunorau Defender Full-Suspension Fat?
Eunorau publishes 20 MPH (32 KM/H) under speed limited/locked. It is listed as Class 2. E-bike class rules and speed limits are set by state and local law in the U.S., so check the rules where you ride before you buy.
Who does the Defender Full-Suspension Fat fit, and how much can it carry?
Eunorau publishes a total payload capacity of 300 lbs / 136kg. Recommended rider height is 5'3" ~ 6'4". The bike itself weighs 66 lbs.
Is the Eunorau Defender Full-Suspension Fat UL certified?
Yes — Eunorau lists this model as UL certified. In the U.S. that increasingly determines whether you can store and charge the bike inside an apartment building, and some insurers ask for it too.
What warranty covers the Eunorau Defender Full-Suspension Fat?
Eunorau's 24-Month+ Limited Warranty: 10 years on the frame and 24 months on the battery, motor and electrical components, covering manufacturing defects. It requires registration with Eunorau after purchase, applies to the original purchaser only, and excludes wear items and labor. Redtail coordinates claims for bikes bought from us.
How does the Defender Full-Suspension Fat ship, and can I return it?
Free shipping within the contiguous U.S., dispatched in 1–3 business days and typically delivered 5–10 business days later. Inspect it at delivery — damage or defects must be reported with photos within 48 hours. Unopened change-of-mind returns are accepted within 72 hours with a 15% restocking fee plus return shipping.
Keep looking
All Eunorau e-bikes we stock · Compare the FAT-HD 1.0 Pro Mid-Drive Fat eBike (Hunter X7) · Compare the FAT-HD 2.0 Mid-Drive Fat eBike (Hunter X7) · Every e-bike brand at Redtail · Shop electric bikes by type
How we verified this page. Every specification above was read from Eunorau's own published product page on 2026-08-13 and is reproduced as Eunorau states it. Where Eunorau does not publish a figure, this page leaves it out rather than estimating. Warranty terms are Eunorau's, quoted from their warranty policy; shipping and return terms are Redtail's own. Prices are USD and current at the date shown. Corrections: support@redtailebikes.com.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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