Exploring the Eunorau e-bike: Defender S

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In the world of electric bikes, innovation knows no bounds. Direct-to-consumer (D2C) e-bike companies have been pushing the boundaries of traditional bicycle design, creating unique and unconventional e-bike models. The Eunorau Defender S is a prime example of this paradigm shift. Unlike the typical e-bikes produced by legacy bicycle manufacturers, the Defender S dares to be different, offering a fresh and distinctive approach to electric biking. In this comprehensive review, we’ll delve into the characteristics and features that set the Eunorau Defender S apart from the crowd.

Two-Wheel Drive Dominance

The most striking feature of the Eunorau Defender S that sets it apart from the majority of e-bikes is its utilization of two-wheel drive. Yes, you read that very correctly – both the front and rear wheels of this e-bike are driven, giving it unparalleled control and traction. We’ll explore the mechanics behind this unique design later in the review.

An All-Terrain Adventurer

At its core, the Eunorau Defender S is an all-terrain e-bike equipped with full suspension to tackle rough roads and rocky terrains with ease. It boasts hydraulic disc brakes for precision stopping power and is outfitted with a 9-speed Shimano Alivio drivetrain, enhancing its climbing capabilities on steep hills. Additionally, the Defender S offers two different frame sizes to accommodate a wide/broad range of riders.

Electrical Specification and Features of this e-bike

Image Source: https://eunorau-ebike.com/products/defender-s

Battery life : 48V/14 Ah + Optional Battery (Dual Battery Design)

  • The Defender S is equipped with a powerful 48-volt, 14 amp-hour (Ah) battery. This high-capacity battery provides ample energy to support extended rides and challenging terrains.
  • Notably, the e-bike offers an optional dual battery design. This means you have the choice to add a second battery, effectively doubling your riding range. With both batteries in use, you can enjoy even longer journeys without worrying about running out of power.

Display setup: New C3 Colorful Display + F/R Motor Switch

  • The e-bike features a modern and vibrant New C3 Colorful Display. This display serves as the central hub for monitoring and controlling various aspects of your ride.
  • The display includes an innovative F/R (Front/Rear) Motor Switch, allowing you to toggle between using either the front or rear motor, providing flexibility and adaptability to different riding scenarios.

Motor: 48V750W + 750W BAFANG Fat Tire Motor

  • The Eunorau Defender S boasts a robust motor setup with dual 750-watt BAFANG hub motors. This dual-motor configuration is a standout feature, delivering impressive power and traction.
  • With a total power output of 1500 watts (1.5 kW), this e-bike accelerates quickly and can conquer challenging terrains with ease. The dual motors enhance stability and control, ensuring a thrilling riding experience.

Headlight: 40 Lux LED Light

  • The e-bike is equipped with a high-quality 40 Lux LED headlight. This bright and efficient headlight ensures excellent visibility during low-light conditions or nighttime riding, enhancing safety on the road or trail.


  • Complementing the front headlight is a taillight at the rear of the e-bike. This taillight contributes to visibility from behind, ensuring that you remain noticeable to other road users, further enhancing safety.

Pedal Assist: 5 Levels

  • The Defender S offers a versatile pedal assist system with five different levels. These levels allow you to choose the amount of electric assistance you receive while pedaling. You can easily adjust the assistance level to match your riding preferences and terrain.

Range: 80-plus Miles with Second Battery

  • With the optional second battery installed, the Defender S can achieve an impressive range of 80-plus miles on a single charge. This extended range is ideal for long-distance rides or adventures in remote areas, providing the freedom to explore without range limitations.

Throttle: Thumb Button

  • The e-bike features a convenient thumb-button throttle. This throttle allows you to accelerate and maintain speed effortlessly without pedaling. It provides an extra boost when needed, enhancing your overall riding experience.

Weight & Dimensions

Image Source: https://eunorau-ebike.com/products/defender-s

Claimed Weight: 84 lbs.

  • The claimed weight of the Defender S is 84 pounds. It’s essential to consider the weight when handling and transporting the e-bike, especially if you need to pick it up and load it onto a bike rack or store it in tight spaces.

Maximum Rider Weight: 440 lbs.

  • The e-bike has a generous maximum rider weight capacity of 440 pounds. This high weight limit makes it suitable for a wide range of riders, including those who may be larger or carrying additional cargo.

Components & Accessories

Brakes: Hydraulic Disc Brakes, 180mm Rotor

  • The Defender S is equipped with hydraulic disc brakes featuring 180mm rotors. Hydraulic disc brakes offer effective and reliable stopping power and precise control, enhancing safety during your rides.

Fenders: N/A

  • The e-bike does not come with fenders. Depending on your riding preferences and conditions, you may consider adding aftermarket fenders to protect yourself from mud and water splashes.

Suspension: RST GUIDE Fork 75mm Travel / EXA KS582, 165L

  • Full suspension is a notable feature of the Defender S. It incorporates an RST GUIDE Fork with 75mm of travel and an EXA KS582 shock absorber with a length of 165mm. This suspension system effectively smooths out rough terrain, providing a comfortable and controlled ride.

Frame: Aluminum Alloy 6061 Full Suspension

  • The e-bike features a sturdy and durable aluminum alloy 6061 frame with full suspension. The frame design optimizes strength while maintaining a manageable weight, contributing to the e-bike’s overall performance.

Drivetrain: SHIMANO ALIVIO 9-Speed Gear Shift System

  • The Defender S is equipped with a high-quality SHIMANO ALIVIO 9-speed gear shift system. This drivetrain offers an impressive wide range of gears, allowing you to easily adapt to varying terrains and inclines.

Grips: Rubber, Lock-On

  • The e-bike comes with comfortable rubber grips with a lock-on design. These grips provide a secure and ergonomic handhold during your rides, reducing fatigue.


  1. Dual Bafang Hub Motors: The Eunorau Defender S boasts not one but two Bafang hub motors. This dual-motor setup is a game-changer, delivering several advantages:
  • Enhanced Acceleration: With power from both front and rear wheels, the Defender S accelerates impressively, providing a thrilling riding experience.
  • Superior Traction: Dual motors significantly improve traction, making it easier to conquer challenging terrains, including steep hills and rough trails.
  • Balanced Performance: The front and rear motors work in harmony to distribute power evenly, ensuring stability and control.
  1. Size Variability: This e-bike is available in two different frame sizes, catering to a wide range of riders. Whether you’re 5-feet-3 or 6-feet-4 tall, you can find a size that fits you comfortably.
  2. Exceptional Climbing Capability: Thanks to the dual motors and robust power output, the Defender S excels in climbing hills, making it an excellent choice for riders who face steep inclines regularly.
  3. High-Quality Drivetrain: Equipped with a 9-speed Shimano Alivio drivetrain, this e-bike offers a higher-end gear-shifting system compared to most e-bikes in its price range. The Shimano Alivio drivetrain ensures smooth and precise gear changes, enhancing your overall riding experience.
  4. Versatile 4″ Wide Tires: The e-bike features 4-inch-wide tires, which are well-suited for various terrains. These wide tires provide stability and control, minimizing the risk of flats, even during off-road riding.
  5. Impressive Payload Capacity: With its payload capacity of 440 lbs., the Defender S can accommodate larger riders comfortably. The dual motors also provide the extra power needed for riders with greater weight.


  1. Class-Conforming Limitations: While the dual motors and powerful 1500W output deliver exceptional performance, they may limit the use of the Defender S in areas where class-conforming e-bikes are mandated by regulations. Riders should be aware of local e-bike laws and restrictions.
  2. Limited Range: The exhilarating performance of the dual motors can lead to shorter battery life. Riders may find that the range is somewhat limited. However, Eunorau offers an option to upgrade the battery capacity or add a second battery for an additional cost, addressing this limitation.
  3. Battery Cover Issues: Some users have reported instances of the battery cover detaching during rides. This issue may require a temporary fix, such as using duct tape. While this doesn’t affect the bike’s functionality, it’s worth noting for aesthetics and convenience.
  4. Front-End Cable Clutter: The front end of the bike features a collection of wires, hoses, and cables, which could benefit from better organization and cable management. While this doesn’t impact the bike’s performance, it may affect the bike’s aesthetics and tidiness.

In summary, the Eunorau Defender S Electric Bike offers a unique and exciting riding experience, thanks to its dual-motor setup and versatile features. It’s a great choice for riders who value power, traction, and off-road capabilities. However, potential buyers should be aware of regulatory limitations, consider their range needs, and be prepared for some cable management.



Karan, an eBike specialist, brings a unique blend of technical expertise and passion for sustainable transport. He boasts three years in the electric mobility sphere, with hands-on experience in various eBike brands. Beyond his work, he loves embarking on outdoor adventures riding his eBike.

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