Eunorau Specter-S All Terrain Fat Tire Electric Mountain Bike

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Black with Green
Black with Red

⚡Powerful 1000W Bafang M620 (Ultra) Mid-Drive Motor System with Torque & Speed Sensors

48V/14Ah Downtube-Integrated Battery w/ Samsung Cells (Additional Dual Battery Optional)  

Front and Rear Hydraulic Disc Brakes w/ 180mm Rotors & Auto Motor Cutoffs

11-Speed SRAM NX Drivetrain System

5-Level Pedal Assist w/ Thumb Throttle

Kenda Krusade Sport 26" x 4.0" Tires w/ K-Shield Protection

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Introducing Specter-S

The all-new 2021 Eunorau Specter-S is a high-end electric mountain bike featuring premium components throughout, and some truly innovative ebike technology. It has been designed for the most rugged outdoor riding conditions, with an aircraft-grade 6061 aluminum alloy frame, full-suspension diamond mountain bike frame, hydraulic disc brakes, and puncture-resistant fat tires. And the electronics are top notch, including the Bafang Ultra mid-drive engine and an integrated dual battery configuration for longer rides per charge. The Specter-S is ideal for off-road enthusiasts, mountain bikers and hunters alike.

Specter-S Fat Tire Electric Mountain Bike Description

If you need an electric mountain bike with incredible hill-climbing and towing capability, the Specter-S is for you. This model features the highly capable 48-volt Bafang M620 Ultra Mid-Drive System, which includes the G510 mid-drive motor. The Ultra motor has a nominal output of 1000 watts (1500W peak output), and up to 160 Newton Meters (Nm) of torque, unmatched in the world of ebikes. This mid-drive motor uses one torque sensor and 2 speed sensors, creating a highly responsive and efficient. The torque sensor is ideal for slow and technical rides over very diverse terrain. The motor can be programmed to operate at a maximum 750W for use in restricted areas.

The heavy-duty full-suspension frame of the Specter-S is hand-crafted from 6061 aluminum, giving the bike incredible strength. It is offered in 17” and 19” sizes, and comes in stunning black and gorgeous grey finishes. The inverted front shock is made by Eunorau and provides up to 140mm of travel. The rear shock is DNM model A0-42RC, which features a dark hard-anodized AL-7075 ∅10 mm ( 0.39”) damper shaft, adjustments for rebound, lockout and high pressure, and delivers up to 190mm of travel. Cables are threaded through the frame for a clean design. The battery is integrated into the downtube portion of the frame, with the option for a second battery added on top of the downtube.


The Specter-S has 5 levels of pedal assist, allowing you to finely adjust how much power the motor puts out. It also features a thumb throttle, which allows for riding without pedaling (very stealthy). The Specter-S also features a SRAM NX 11-speed derailleur, providing smooth, reliable and fast shifting action, and the elimination of unwanted chain movement and an end to ghost shifting.

The 48V/14Ah battery on the Specter-S is located within the downtube, providing an added level of stealth and aerodynamics to the frame. This battery is packed with Samsung cells. If you really want to extend the range of your ride, there is an option to buy a second battery with 48V/14Ah or 48V/17Ah specs, which mounts on top of the downtube. The controller adjusts the draw from each battery automatically based on voltage and demand. The range these batteries are capable of achieving will vary based on a number of significant factors, including terrain, load, and demand. Please use our Ebike Range Calculator to estimate your expected range per charge.

The Specter-S is a very capable fat tire electric hunting bike, designed especially for natural trails and rugged off-road terrain. You will appreciate the highly responsive torque sensor, that will make slow technical riding feel natural and intuitive. This electric mountain bike is a favorite of hunters, allowing you to travel great distances to follow game, monitor cameras, and visit remote watering spots. The Kenda Krusade Sport 26” x 4” fat tires designed for use with ebikes, feature dense 30 TPI casings, wire beads and K-Shield protection.

eunorau specter-s control panel

Kenda's first line of defense since 1995: a layer of light, flexible rubber containing aramid and ceramic particles inside the tire, under the tread area only. This has been designed to prevent punctures and increase tire life. The Kenda Krusade tire features a reflective sidewall stripe and Kenda's K-Shield puncture-resistant tire liner.

These tires will provide excellent traction and stability on uneven and gravely surfaces, and can be ridden on snow and sand. For a wider footprint, you can deflate the tires down to 5psi, or pump them up to 30psi when you ride on paved surfaces and want a more responsive feel and performance.

When it comes to stopping with authority, the Specter-S does not disappoint. It features an hydraulic brake system with 180mm stainless steel rotors front and rear, and automatic brake/motor cutoff sensors, so you will never risk motor acceleration during braking.

Electric bikes are an excellent form of transportation, even a highly specialized ebike like the Specter-S. They can be ridden in bike lanes and other areas where cars are prohibited; they have zero emissions, and are therefore a greener, ecologically-friendly alternative to cars.

Eunorau Spector-S Specifications

  • MOTOR: 1000W Nominal (1500W Peak) Bafang G510/M620 (Ultra) Mid-Drive Motor with (1) Torque and (2) Speed Sensors; 160Nm Torque
  • FRAME: Aircraft-Grade 6061 Aluminum Alloy w/ Full Suspension & Integrated Electronics
  • FRONT FORK: Eunorau Inverted Fork w/ 140mm Travel + Lockout
  • REAR SHOCK: DNM AO-42RC w/ 190mm Travel
  • MAXIMUM SPEED: 35 mph
  • BATTERY: 48V/14Ah Downtube-Integrated w/ Samsung Cells  w/ Optional 2nd Downtube-Mounted 48V/14Ah or 48V/17Ah for Dual Configuration
  • DRIVE MODES: 5-Level Pedal Assist System (PAS); Thumb Throttle; 11-Speed Gears
  • DISPLAY: DPC18 LCD Color Display
  • LIGHTS: Integrated Front LED Headlight and Taillight
  • RIMS: 26" Black Alloy
  • SPOKES: Stainless Steel
  • TIRES: Kenda Krusade Sport Tires 26" x 4.0" with K-Shield Protection
  • GEARS: SRAM NX 11-Speed Gears
  • SPROCKET: 40T Bafang Chain Wheel
  • BRAKESDual Hydraulic Disc Brakes w/ 180mm Rotors & Auto Motor Cut-Off Sensors 
  • BRAZONS: Attachment Points for Rear Rack & Fenders
  • PEDALS: High Quality Nylon Pedals
  • MANUAL: Included
  • TOOL: Included

Electrified Reviews

Brent McCluskey of Electrified Reviews gives the Specter-S a big thumbs up in this review. Check it out.

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Ask a Question
  • I was wondering if the las vegas location does any service on bikes.

    The Las Vegas warehouse services batteries and other parts, but most service that might be required can be rendered by a local bike shop.

  • How much does the specter-s weigh?

    86 lbs.

  • What options are available for this bike? Is there a pannier rack and mud fenders available for this bike?

    The Specter-S has standard attachment points for fenders and a rear rack, but does not come with their accessories.