Biktrix Juggernaut Ultra Duo 3 1000W 52V Step-Over Fat Tire Mid Drive Electric Bicycle with 5 Levels of Pedal Assist and Thumb Throttle
On sale now - New stock - Latest model. Limited Supply.
Go twice as far and never worry about your range. The Juggernaut Ultra DUO 3 Step-Over Fat Tire Mid-Drive eBike features our dual integrated battery technology, powerful mid-drive motor, and an RST Guide suspension fork. The Juggernaut Ultra Duo 3 Step-Over Fat Tire Mid-Drive comes with throttle-on-demand and cadence PAS (Pedal Assist Sensor).
Features of the Biktrix Juggernaut Ultra Duo 3 1000W 52V Step-Over Fat Tire Mid Drive eBike
- Powerful 1000W Bafang mid-drive motor
- Mid-drive motor - The mid-drive motor will let you roam cities, climb hills, and explore with ease
- Max torque - Get all the power you can handle, together with the exceptional build quality and 160Nm of torque
- Dual integrated battery system
-
Up to 90 miles range, depending on your battery choice, rider's weight, and riding conditions
-
5 Levels of Pedal Assist (PAS) to find just the right amount of help from the motor
- Cadence+Torque sensor makes Pedal Assist smooth and powerful
- Fat Tires - Whether you're up against sand, mud or snow, these tires will handle it without breaking a sweat. The Juggernaut Ultra Duo 3 is ready for all-season, all-terrain riding
- Big and easy to read LCD display
- Shimano 11-speed (gears) transmission
- Integrated front light - Never ride blind again. Our bikes come with front lights integrated with the main battery of the bike
- Fenders and rear rack included for FREE
- Up to 380 lbs. load capacity (depends on the fork you choose)
It offers two different frames to accommodate riders of different sizes:
- The 17" frame fits riders 5'2" and taller
- The 19" frame fits riders 5'8" and taller
Feel free to contact us about accessories and other upgrades - (upgraded lights, suspension seat post, saddlebags, mirror, handlebars).
Powerful Bafang Ultra M620 Mid-drive Motor
The mid-motor makes the Juggernaut Ultra Duo 3 Step-Over very versatile. Mid-drive motors are much more efficient than hub drives as they can use the bike's gears as transmission. Hills become something of a novelty with the new Biktrix Juggernaut Ultra Duo 3 1000W 52V Step-Over Fat Tire Mid-Drive electric bicycle.

Dual integrated battery system
Range worries are a thing of the past with our dual battery system. One battery is embedded in the frame, while the other is mounted within the triangle of the frame. This positioning maintains stability, with no noticeable effect on your ride.

Thumb-throttle & control pad
Just a push of the thumb and this becomes a motorbike. The control pad allows you to turn the bike on/off and customize your riding experience. Just sit back and enjoy the ride.


LCD display
The LCD display shows you all kinds of important information about your ride including speed, battery life, range, odometer, pedal assist level, and more.

Hydraulic disc brakes and fat tires
Get strong & dependable stopping power from the hydraulic disc brakes, and extra traction from 4” Fat Tires. Choose 27.5×3 MTB wheels for less drag and a great commute on and off-road.

RST guide suspension fork
The RST Guide Suspension fork provides control, traction, and comfort, making for an even, smooth ride every time. It is just one of the many Juggernaut Ultra Duo 3 Step-Over Fat Tire Mid-Drive features that add to the enjoyment of your eBike ride.

Integrated headlight
A bright LED will light your way when the sun goes down. It's powered by the bike's battery and can be turned on/off with a button on the handlebar control pad.

Rack and Fenders
These fenders will keep you and your bike clean. Need to carry some gear? Strap on the rear rack and make your way.

Drivetrain
From climbing hills to holding maximum speed on the flats, the SRAM NX 11-speed drivetrain has you covered.

The Biktrix Juggernaut Ultra Duo 3 Step-Over Fat Tire Mid-Drive eBike is perfect for commuting on the street or ripping up hills off-road. Simply put, it’s a ton of fun.

Personalize your Biktrix eBike and build a bike that is just perfect for you. Increase your bike’s functionality and boost your experience. Swap the 27.5x3" fat tires with a 26x4" set to handle the toughest terrain and weather conditions.

Three ways to ride the Biktrix Juggernaut Ultra Duo 3 1000W 52V Step-Over Fat Tire Mid Drive eBike
- Pedal only (with no help from the motor)
- Pedal Assist (with 5 levels of assist to choose from)
- Throttle only (effortless like a motorcycle)
The Biktrix Juggernaut Ultra Duo 3 Step-Over Fat Tire Mid-Drive eBike can be used as a normal bike where the rider provides all the power, or you can use just the throttle and let the bike do all of the work. There is also an in-between option, Pedal Assist, where the rider pedals and the motor provides a great boost at the same time. You can choose the level that is right for your type of riding. The Levels of Pedal Assist allow for increased ride efficiency, resulting in less strain on your knees while riding. It makes riding fun and effortless.
Specifications of the Biktrix Juggernaut Ultra Duo 3 1000W 52V Step-Over Fat Tire Mid Drive eBike
MOTOR |
1000W BAFANG ULTRA M620 |
MAX TORQUE | 160NM |
FRAME |
6061 AIRCRAFT GRADE ALUMINUM
|
FORK | RST RENEGADE COIL SPRING FORK, 100MM TRAVEL, ADJUSTABLE HYDRAULIC LOCKOUT |
SHIFTER | SRAM NX 11 SPEED TRIGGER SHIFTER |
DERAILLEUR | SRAM NX 11 SPEED |
CASSETTE | SRAM 11-42T |
CHAIN | KMC E11S |
DISPLAY | DP-C18 COLOR DISPLAY |
BATTERY | 52V 17.5AH |
RANGE EXTENDER | 52V 14.5AH, 17.5AH, 21AH |
RIMS | BLACK 24”, BLACK 26” 36H, BLACK 27” 36H |
TIRES | 26X4”, 27.5X3”, 24X4” |
BRAKE LEVER |
BIKTRIX ADJUSTABLE
|
BRAKES |
BIKTRIX HYDRAULIC BRAKES W/180MM ROTORS
|
STEM | 90MM ALUMINUM |
HANDLEBAR |
31.8MM CLAMP, 650MM WIDE, 50MM RISE ALUMINUM
|
SEAT POST | ALUMINUM 28.6MM |
GRIPS | SLIDE ON |
SADDLE | BIKTRIX SPRING SUPPORTED COMFORT CRUISER |
SEAT POST CLAMP | QR |
HEADLIGHT |
INTEGRATED HEADLIGHT, 100 LUMENS
|
TAILLIGHT | INTEGRATED TAILLIGHT |
THROTTLE | THUMB THROTTLE |
ASSIST LEVELS | 0-5 |
ASSIST TYPE | TORQUE + CADENCE |

BIKE GEOMETRY | |||||||
17" SO | 18" ST | 19" SO | |||||
MM | INCHES | MM | INCHES | MM | INCHES | ||
1 | EFFECTIVE TOP TUBE LENGTH | 590 | 23.2 | 540 | 21.3 | 590 | 23.2 |
2 | SEAT TUBE LENGTH (CLASSIC BIKE SIZE) | 420 | 16.5 | 460 | 18.1 | 470 | 18.5 |
3 | REACH | 440 | 17.3 | 500 | 19.7 | 440 | 17.3 |
4 | STACK | 660 | 26 | 540 | 21.3 | 660 | 26 |
5 | CHAINSTAY LENGTH | 500 | 19.7 | 520 | 20.5 | 510 | 20.1 |
6 | STANDOVER HEIGHT | 690 | 27.2 | 430 | 16.9 | 730 | 28.7 |
7 | HEAD ANGLE | 70 DEGREES | 68 DEGREES | 70 DEGREES | |||
8 | SEAT ANGLE | 73 DEGREES | 71 DEGREES | 73 DEGREES | |||
9 | HEAD TUBE LENGTH | 180 | 7.1 | 180 | 7.1 | 180 | 7.1 |
10 | FORK LENGTH | 540 | 21.3 | 540 | 21.3 | 540 | 21.3 |
11 | FRONT CENTER | 720 | 28.3 | 730 | 28.7 | 730 | 28.7 |
12 | BB (BOTTOM BRACKET) DROP | 60 | 2.4 | 50 | 2 | 60 | 2.4 |
13 | FORK OFFSET | 40 | 1.6 | 40 | 1.6 | 40 | 1.6 |
14 | WHEELBASE | 1230 | 48.4 | 1240 | 48.8 | 1230 | 48.4 |
15 | TOTAL LENGTH | 2000 | 78.7 | 2000 | 78.7 | 2000 | 78.7 |
16 | MAX SEAT HEIGHT | 1000 | 39.4 | 1000 | 39.4 | 1050 | 41.3 |
17 | MIN SEAT HEIGHT | 830 | 32.7 | 880 | 34.6 | 880 | 34.6 |
18 | HANDLEBAR HEIGHT | 1120 | 44.1 | 1100 | 43.3 | 1140 | 44.9 |
19 | WEIGHT (WITHOUT BATTERY) | 34 KG | 75 LB | 35 KG | 77.2 LB | 35 KG | 77.2 LB |
Download Old Juggernaut User Manual HERE (very useful for all Biktrix eBikes)
Videos of the Biktrix Juggernaut Ultra Duo 3 1000W 52V Step-Over Fat Tire Mid-Drive eBike
