Eunorau Specter-ST Step-Thru Electric Mountain Bike

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Black with Green
Black with Orange

Powerful 1000W Bafang Ultra Mid Drive Motor w/ Torque & Speed Sensors

48V/14Ah Downtube-Integrated w/ Samsung Cells (Dual Option Avail.)

Front and Rear Hydraulic Disc Brakes w/ Auto Motor Cutoffs

11-Speed SRAM NX Drivetrain

5-Level Pedal Assist System w/ Thumb Throttle 

Kenda 26" x 4" Kenda Juggernaut Pro Fat Tires with K-Shield Protection

eunorau bikes authorized dealer logo for really good ebikes

Introducing Specter-ST

The all-new 2021 Eunorau Specter-ST is a high-end step-through 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, step-through mountain bike frame, hydraulic disc brakes with automatic motor cutoffs, and puncture-resistant fat tires.

The electronics are top notch, including the Bafang Ultra mid-drive engine system and an integrated dual battery configuration for longer rides per charge. The Specter-ST is ideal for off-road enthusiasts, mountain bikers and hunters alike.

Specter-ST Description

The Eunorau Specter-ST step-thru, mid-drive electric mountain bike is a perfect for off-road adventures - a favorite for hunting and fishing trips. While technically a step-through bike, the Specter-ST is about about trails and dirt.

If you need an electric mountain bike with incredible hill-climbing and towing capability, the Specter-ST 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.


bafang ultra motor


The heavy-duty full-suspension frame of the Specter-ST is hand-crafted from 6061 aluminum, giving the bike incredible strength.

It is offered in 17” and 18.5” frame sizes, and comes in matte black with futuristic mechanical graphics.

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-ST 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-ST comes with a downtube-integrated 48V/14Ah battery, providing an added level of stealth and aerodynamics to the frame. This battery, which 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-ST 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, visit remote watering spots, and easily mounting and dismounting the bike.

The Kenda Juggernaut Pro 26” x 4” fat tires designed for use with ebikes, feature dense 30 TPI casings, wire beads, reflective sidewalls, and K-Shield protection. 

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.


kenda juggernaut pro fat tire


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-ST 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-ST. 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.

Specter-ST Specifications

  • MOTOR: 48V1000W Bafang M620/M510 (Ultra) Mid-Drive Motor System w/ Torque and Speed Sensors; 160Nm Torque
  • BATTERY TYPE: Downtube-Integrated 48V/14Ah (17Ah Optional) w/ Samsung Cells + Optional 2nd Battery (Dual Mount Design)
  • FRAME: Aluminum Alloy 6061 Step-Thru with Front Suspension
  • FORK: Suspension Fork w/ 140mm Travel
  • SHOCK: DNM AO-42RC Rear Absorber w/ 165mm Travel
  • BOX DIMENSIONS: (cm) 170 L x 32.5 W x 85 H
  • THROTTLE: Thumb Throttle
  • DISPLAY: DPC18 Display
  • LIGHTS: Front LED Head and Taillight
  • RIMS: 26 inch Black Alloy
  • SPOKES: Stainless Steel
  • HANDLEBAR: 680mm Width
  • TIRES: 26" x 4" Kenda Juggernaut Pro Fat Tires with K-Shield Protection
  • GEARS: SRAM NX 11-Speed Drivetrain
  • SPROCKET: 40T Bafang Chain-Wheel Crank
  • BRAKES: Front and Rear Hydraulic Disc Brakes w/ 180mm Rotors and Automatic Motor Inhibitors
  • PEDALS: High-Quality Nylon Pedals
  • BRAZONS: Attachment Points for Fenders & Rear Rack
  • MANUAL: Included
  • TOOL: Included
  • Orders for in-stock items take 24-48 hours to process, then about 5-7 days in transit. Delays due to Covid have occurred. If an item is on backorder, the estimated ship date will be shown below the Pre-Order Button.
  • All products are shipped free within the Contiguous US via UPS, FedEx or similar carrier. Shipping to AK, HI and PR may incur additional charges.
  • If your package appears damaged from shipping, please do not accept it. Tell the driver to keep the package and contact us immediately at 888-883-3350. We offer Route Package Protection to ensure against lost, stolen or damaged goods. Click here to learn more about Route.
  • Returns for buyer’s remorse are typically not accepted by our suppliers, and if accepted, the customer may incur shipping and restocking fees.
  • Please click here to read our entire Shipping & Returns Policy.


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