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Built for challenging terrain and all-season exploration, the DEFENDER-S 2.0 combines dual-motor traction, responsive torque-sensing assist, and a four-bar full-suspension frame. All-wheel-drive traction, four-bar full suspension, and torque-sensing control are built into one capable fat-tire platform.
Two 750W hub motors provide confident all-wheel-drive support, while the 48V 17Ah battery supplies the energy needed for demanding rides. Wide 26" × 4.0" fat tires, hydraulic disc brakes, and a Shimano 9-speed drivetrain help you stay in control across hills, loose surfaces, and uneven trails.
Key Features
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Dual-Motor All-Wheel Drive: A 750W hub motor at both the front and rear wheels delivers 1,500W of combined rated power. All-wheel drive helps maintain forward momentum and confident traction on loose, soft, or uneven surfaces.
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Torque-Sensing Assist: The torque sensor reads how hard you pedal and adjusts assistance to match. Press harder for more support or ease off for gentler output.
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Four-Bar Full Suspension: A four-bar rear linkage, 75mm suspension fork, and adjustable air shock help isolate impacts and keep the wheels tracking across broken ground.
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48V 17Ah Removable Battery: Up to 40 miles of estimated range from the included battery, extendable to up to 80 miles combined with an optional second battery.
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Hydraulic Disc Brakes: 203mm front and rear rotors provide controlled braking, with motor cut-off sensors that interrupt assistance when either lever is pulled.
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26 × 4.0-Inch Fat Tires: A wide footprint supports stability and traction across loose and changing terrain.
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Color Display + Bluetooth: Track ride information and manage assist settings from the handlebar.
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Shimano 9-Speed: A practical gear range for climbs, cruising, and changing terrain.
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Integrated Front Light: A front light and electronic horn add visibility and convenience.
Power at Both Wheels
A 750W hub motor at both the front and rear wheels delivers 1,500W of combined rated power. All-wheel drive helps maintain forward momentum and confident traction on loose, soft, or uneven surfaces.
A 750W hub motor at each wheel provides a combined rated motor output of 1,500W. Power is delivered to both the front and rear wheels, improving traction and giving you additional support when climbing or riding over loose terrain.
- Front and rear motor drive
- 85 N·m maximum torque
- Selectable power for changing conditions
Control That Moves With the Terrain
A four-bar rear linkage, 75mm suspension fork, and adjustable air shock help isolate impacts and keep the wheels tracking across broken ground.
The four-bar suspension design helps isolate bumps and maintain better wheel contact over uneven terrain. A suspension fork at the front and an air shock at the rear work together to improve comfort, stability, and control.
- Four-bar rear suspension design
- 75mm front suspension travel
- Adjustable air rear shock
Power That Responds to You
The torque sensor reads how hard you pedal and adjusts assistance to match. Press harder for more support or ease off for gentler output.
Pedal lightly for gentle support or apply more pressure when you need additional power, creating a smoother and more intuitive riding experience.
- Rider-responsive power delivery
- Smoother starts and speed changes
- Natural control across assist levels
Built for the Surface Beneath You
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Hydraulic Disc Brakes: Front and rear hydraulic disc brakes are paired with large 203mm rotors for controlled stopping performance. Integrated motor cut-off sensors immediately interrupt motor assistance when either brake lever is engaged.
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26 × 4.0-Inch Fat Tires: Wide fat tires provide a larger contact area for enhanced grip and stability. They help the bike maintain control across gravel, dirt, sand, snow, and other loose or uneven surfaces.
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Color Display + Bluetooth: The handlebar-mounted display provides convenient access to pedal-assist and speed settings. Bluetooth functionality supports compatible connected features.
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Shimano 9-Speed: The Shimano 9-speed drivetrain gives you a practical range of gears for climbing, cruising, and adapting to changing terrain. The handlebar-mounted shifter makes gear changes quick and convenient.
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Integrated Front Light: The integrated front light and horn add everyday convenience and visibility.
Choose the Line. Keep Moving.
A wide tire platform, full suspension, and all-wheel drive support riders moving between pavement and less predictable surfaces.
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Gravel: Stay composed on loose gravel. Dual-wheel traction helps maintain momentum while wide tires support a planted feel.
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Sand: A wider footprint for soft ground. Fat tires spread the contact area while all-wheel drive helps keep power moving forward.
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Snow: Added traction for winter surfaces. The fat-tire platform and two-wheel drive add confidence as conditions become soft or slippery.
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Trail: Full suspension for repeated impacts. Front and rear suspension help manage roots, ruts, and uneven ground.
48V 17Ah Battery
The 48V 17Ah battery uses high-capacity cells and is designed to support the demands of the dual-motor system. The included battery delivers up to 40 miles of estimated range. For longer adventures, add an optional second battery and extend the combined riding range up to 80 miles.
- Removable battery design
- 17Ah battery capacity
- 6–8 hr estimated charge time
- Up to 40 mi / 64 km estimated range
Suitable For:
- Gravel roads
- Sand
- Snow and winter riding
- Uneven trails
- Pavement and mixed surfaces
- All-season exploration
- Hunting and backcountry access
Please Note: Class 2 speed limited, unlockable. Default startup mode is Class 2, assisted up to 20 mph / 32 km/h; the maximum manufacturer setting (manufacturer-defined Class 4) is up to 28 mph / approximately 45 km/h. Follow local regulations.
Please Note: Range figures are estimates; actual range varies with rider weight, terrain, speed, assist level, temperature, tire pressure, and riding style.
Please Note: Extended range of up to 80 mi requires the optional second battery.
Please Note: Compatible accessories listed on the page: FAT-HS/DEFENDER-S/FAT-AWD 2.0 Rack & Fender Set, Universal 48V 15Ah Secondary Battery, Meta/Defender/HS battery, 1-wheel cargo trailer, hunting trailers (1 and 2 wheel), Genesis adult helmet.
Also available as: DEFENDER
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Specifications
Electronics
Motors: Dual 48V 750W hub motors
Motor positions: Front and rear
Drive system: All-wheel drive
Combined rated power: 1,500W
Maximum torque: 85 N·m
Battery: 48V 17Ah removable lithium-ion battery
Battery management system: 50A BMS
Charger: 54.6V 2A
Charging time: Approximately 6–8 hours
Display: MINI TOUCH Color display with Bluetooth functionality
Controller: 48V 25A dual-motor controller
Pedal assist sensor: Bottom-bracket torque sensor
Frame & Suspension
Frame: 6061 aluminum, 26-inch four-bar full-suspension frame
Front fork: RST GUIDE
Front suspension: 75mm travel, preload and lockout
Rear shock: AOS01 air shock
Rear suspension: 165mm eye-to-eye adjustable air shock
Handlebar: 700mm alloy riser bar (700mm wide, 25mm rise)
Stem: Adjustable alloy stem (105mm aluminum)
Grips: 130mm lock-on grips
Seatpost: 31.6 × 280mm aluminum
Saddle: Comfort saddle
Drivetrain & Brakes
Drivetrain: Shimano CUES 9-speed (1×9)
Shifter: Shimano CUES 9-speed Rapidfire Plus (SL-U4000-9R)
Rear derailleur: Shimano CUES RD-U3020-SGS
Cassette: 11–36T, 9-speed (Shimano CUES CS-LG300-9)
Crankset: 42T, 170mm
Brakes: Hydraulic disc brakes with motor cut-off sensors
Rotors: 203mm front and rear
Wheels, Capacity & Speed
Tires: 26 × 4.0-inch fat tires
Rims: 26-inch double-wall alloy rims
Spokes: 12-gauge, 36-hole
Maximum payload: 300 lb / 136 kg, including rider and cargo
Net weight: 89.3 lb / 40.50 kg
Default startup mode: Class 2, assisted up to 20 mph / 32 km/h
Maximum setting: Up to 28 mph / approximately 45 km/h*
Range: Up to 40 miles / 64 km
Extended range - optional battery: Up to 80 mi / 128 km combined*
Equipment
Pedals: 9/16" folding pedals
Front equipment: LED light with horn
Rear safety equipment: Red reflector
Kickstand: Adjustable aluminum kickstand
UL certified: Yes
Geometry & Sizing
17" frame: recommended rider height 5'3"–5'10" (160–175 cm). 19" frame: recommended rider height 5'10"–6'4" (175–195 cm).
| Measurement |
17" |
19" |
| A: Seat tube |
432mm / 17in |
483mm / 19in |
| B: Reach |
448mm / 17.6in |
458mm / 18in |
| C: Head tube |
165mm / 6.5in |
165mm / 6.5in |
| D: Chain stay |
495mm / 19.5in |
495mm / 19.5in |
| E: Bracket height |
359mm / 14.1in |
359mm / 14.1in |
| F: Wheelbase |
1306mm / 51.4in |
1316mm / 51.8in |
| G: Top tube |
645mm / 25.4in |
655mm / 25.8in |
| H: Total length |
2042mm / 80.4in |
2052mm / 80.8in |
| I: Stack |
592mm / 23.3in |
595mm / 23.4in |
| J: Seat height |
585–735mm / 23–28.9in |
635–785mm / 25–30.9in |
| Recommended height |
5'3"–5'10" (160–175 cm) |
5'10"–6'4" (175–195 cm) |
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RST Suspension Fork User Manual (RST GUIDE fork)
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How does torque-sensing assist feel?
It responds to pedaling effort rather than only crank movement. Lighter pressure produces gentler support, while harder pedaling calls for more assistance.
What is the maximum speed?
The bike starts in the manufacturer’s Class 2 configuration, assisted up to 20 mph / 32 km/h. The maximum manufacturer setting is up to 28 mph / approximately 45 km/h. Follow local regulations.
What terrain is it designed for?
The dual-motor system, 26 × 4.0-inch tires, and full suspension support riding across pavement, gravel, sand, snow, and uneven trails. Adjust speed and tire pressure for the conditions.
How far can it travel per charge?
The estimated range is up to 40 miles. Actual range varies with rider weight, terrain, speed, assist level, temperature, tire pressure, and riding style.
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EUNORAU 24-Month+ Limited Warranty
Coverage
- Frame: 10-year limited warranty (replacement or repair)
- Battery: 24 months
- Motor: 24 months
- Electrical components: 24 months
EUNORAU's limited warranty covers manufacturing defects for the original retail purchaser of EUNORAU electric bicycles bought in the U.S. or Canada. It does not cover normal wear and tear or labor costs, and it is not transferable to a subsequent owner.
Warranty Start Date and Registration
For products bought from an authorized EUNORAU dealer, the warranty begins on the original purchase date shown on the purchase invoice or receipt. If proof of purchase can't be provided, the warranty start date is 90 days after the product's manufacturing date, as determined by its serial number. Register your product with EUNORAU promptly after purchase so warranty and after-sales claims can be processed quickly. EUNORAU recommends an inspection by an authorized specialist or dealer after the first year of use. Products used commercially (rental fleets, delivery services, sharing programs) have the standard warranty period reduced by 50%.
Frame Warranty
Covers a replacement or repaired frame only; labor to move parts to a replacement frame is not included. EUNORAU may use scratch-and-dent stock, and frame styles or colors not in stock may be replaced with a compatible style or color. Excluded: corrosion; paint fade, scratches and impact marks; impact damage; non-reversible modification such as drilling or welding; chain guard mounts; and suspension parts.
What Is Not Covered
Ordinary wear and tear (including brake pads, rotors, spokes, grips, shifters, brake cables, casings, tires and tubes, chains, chainrings, cassettes and transmission gears); corrosion from the elements; cosmetic damage or deterioration of the finish; labor for part replacement; damage from accident, abuse, misuse, stunt riding, racing, improper storage, neglect, or exposure to liquids, chemicals, sand or dirt; scratches and dents not caused by EUNORAU; products with a removed or altered serial number or bar code; damage caused by accessories or equipment not furnished or approved by EUNORAU; improper assembly, operation, maintenance or repair that varies from the assembly instructions and manual; external causes such as collision, fire, flood, weather, theft or a blown fuse; using an incompatible or improperly used battery charger; a battery with broken or tampered seals, or used in equipment other than the bike it is specified for; and free gifts or included accessories such as pre-installed racks and fenders.
Shipping Damage
Shipping damage is not covered by the warranty. If you find a problem right after delivery, notify us immediately with photos and/or video of the product and damaged parts, don't use the product, and keep all original packaging.
Visit EUNORAU's Warranty Page to review the complete warranty terms.
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Shipping is typically through freight carriers and the actual shipping time is contingent on your location and the specific warehouse dispatching your order. Please allow for a 1-3 business day processing period before shipment, and an estimated delivery time of up to 7 business days. Your confirmation email will include delivery details and we will send you a tracking number as soon as one is available. If you ordered several separate items, you may receive multiple tracking numbers. Once the item has been shipped, the freight service will contact you to coordinate the date and time of delivery. If you require any special accommodations during delivery please let us know as soon as possible and let the delivery company know when arranging the appointment.
Typically, orders will be dropped off either curbside or outside your front door or garage. It is your responsibility to bring the order inside or to its final destination and to remove any existing items.
Depending on the item, parts may be shipped in multiple boxes, and assembly may be required. When your order is delivered, please check that you have all pieces of the item and that nothing is damaged. If your order is damaged during transit and external damage is visible, note the damage immediately, write it on the delivery documents, take photos and/or videos, and refuse shipment. If there is no visible external damage, accept the package but note “subject to concealed damage” on the delivery documents. Any damage upon delivery needs to be reported within 24 hours of delivery or you may not be eligible for a refund. For additional information on submitting claims, as well as incorrect item exchanges, and replacements, please see our Refund Policy.
For more information about shipping, please visit our complete Shipping Policy.
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Why Shop With Eco Emperor?
At Eco Emperor, our mission is to empower you to lead a sustainable and fun lifestyle with ease and confidence. Whether you're upgrading your outdoor experience or enhancing your eco-conscious journey, here’s why choosing us is a decision you can feel great about:
Expert and Customized Care
Our knowledgeable and friendly team is here to support you every step of the way. We pride ourselves on providing personalized service and swift responses to ensure a smooth and satisfying experience. Our dedicated team is available via phone, email, and live chat to provide you with prompt and helpful support.
Authorized Retailer of High-Quality, Trusted Products from Leading Brands
We partner with the best brands in the industry to bring you reliable, high-quality products. As authorized retailers, we guarantee authenticity and offer full manufacturer warranties on every item. You can trust that our products are built to last and perform efficiently.
Free & Fast Shipping
We know you’re eager to begin your new products or start your next outdoor adventure. That’s why we prioritize quick, reliable, and free shipping to get your orders to you on time and in perfect condition.
Competitive Pricing
We believe that sustainable living should be accessible to everyone. We offer competitive pricing on all our products, so you can enjoy high-quality eco-friendly solutions and outdoor products without breaking the bank.
Choose Eco Emperor for all your outdoor and eco-friendly product needs, and become part of a movement that’s embracing a more sustainable and adventurous lifestyle.
Thank you for supporting a greener, cleaner future, while enhancing your outdoor experiences and powering your adventures.💚
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