Biktrix Juggernaut Hub Duo 750W 52V/17.5Ah Step-Through Fat Tire Electric Bicycle with 5 Levels of Pedal Assist (PAS) and Thumb Throttle
New stock - Latest model. Limited Supply.
Are you looking for a super-powerful electric bicycle that will take you where you want to go, sweat-free? Well, you've come to the right place.
The Duo series bikes feature dual batteries that allow you to go as far as you desire - and never worry about range.
Features of the Biktrix Juggernaut Hub Duo 750W 52V Step-Through Fat Tire eBike
- Powerful and responsive 750W Bafang rear hub motor
- 85Nm of torque - For easy to moderate hills
- Dual integrated battery system
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5 Levels of Pedal Assist (PAS) to find just the right amount of help from the motor
- Sturdy step-through frame for easy on and off
- On-demand throttle makes pedaling optional
- Cadence+torque sensor makes Pedal Assist smooth and intuitive
- Fat Tires - Whether you're up against sand, mud or snow, these tires will handle it without breaking a sweat. The Hub Duo is ready for all-season, all-terrain riding
- Shimano 9-speed (gears) transmission
- Big and easy to read LCD display
- 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 265 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 18.5" frame fits riders 5'8" and taller
The Juggernaut Hub Duo Step-Through Fat Tire eBike features our dual integrated battery technology, and an RST Guide suspension fork.
Perfect for commuting on the street or ripping up hills off-road. This is a rock-solid built beauty with a head-turning style.
Step-Through frame
Many people associate the step-through bicycle as being for women, however, they are convenient for any gender. The big advantage of step-through bikes is that they make it easier and much more comfortable to mount the bike. Your feet will be able to touch the ground and there are no worries about losing your balance and possibly falling while trying to get on it.
Powerful 750W motor
This powerful 750W motor will allow you to span cities, climb hills, and explore further with ease.
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.

Hydraulic disc brakes and fat tires
The hydraulic disc brakes supply firm, safe and smooth stopping power, and get extra traction from the 4" Fat Tires.

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.

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 Hub Duo 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.

Sturdy storage rack for convenient carrying capacity.

The Biktrix Juggernaut Hub Duo 750W 52V Step-Through Fat Tire eBike is perfect for commuting on the street or ripping up hills off-road. Simply put, it’s a ton of fun.

Get all the power you can handle, together with the exceptional build quality and 85Nm of torque.

Ride your own route with confidence and comfort with Biktrix Juggernaut Hub Duo Step-Through Fat Tire eBike.
Three ways to ride the Biktrix Juggernaut Hub Duo 750W 52V Step-Through Fat Tire 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 Hub Duo 750W 52V Step-Thru Fat Tire 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 Hub Duo 750W 52V Step-Through Fat Tire eBike
MOTOR | 750W HUB DRIVE | |
MAX TORQUE | 85NM | |
FRAME |
6061 AIRCRAFT GRADE ALUMINUM
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FORK |
RST GUIDE, 75MM TRAVEL, 135MM DROPOUT, PRE-LOAD ADJUSTABLE AND LOCKOUT
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SHIFTER |
SHIMANO ALTUS 9 SPEED TRIGGER*
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DERAILLEUR | SHIMANO ALTUS 9 SPEED* | |
CASSETTE |
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CHAIN | KMC E9S | |
DISPLAY |
500C
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BATTERY | 52V 17.5AH | |
RANGE EXTENDER |
52V 13AH, 16AH
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RIMS | BLACK, 36H, 60MM WIDE | |
TIRES | 26X4 | |
BRAKE LEVER |
BIKTRIX ADJUSTABLE
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BRAKES |
BIKTRIX DUAL PISTON BRAKES W/ 160MM ROTOR
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STEM | ADJUSTABLE STEM | |
HANDLEBAR |
31.8MM CLAMP, 700MM WIDE, 50MM RISE ALUMINUM
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SEAT POST |
ALUMINUM 28.6MM*
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GRIPS | SLIDE ON | |
SADDLE | BIKTRIX COMFY SADDLE | |
SEAT POST CLAMP | 36.4MM QR* | |
HEADLIGHT |
INTEGRATED HEADLIGHT, 100 LUMENS
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TAILLIGHT |
BATTERY TAILLIGHT
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THROTTLE |
THUMB THROTTLE
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ASSIST LEVELS | 0-5 | |
ASSIST TYPE | TORQUE |

17" STEP-THRU | 18.5" STEP-OVER | 18.5" STEP-THRU | |||||
MM | INCHES | MM | INCHES | MM | INCHES | ||
1 | EFFECTIVE TOP TUBE LENGTH | 590 | 23.2 | 560 | 22 | 550 | 21.7 |
2 | SEAT TUBE LENGTH (CLASSIC BIKE SIZE) | 420 | 16.5 | 470 | 18.5 | 470 | 18.5 |
3 | REACH | 480 | 18.9 | 460 | 18.1 | 400 | 15.7 |
4 | STACK | 610 | 24 | 600 | 23.6 | 680 | 26.8 |
5 | CHAINSTAY LENGTH | 485 | 19.1 | 510 | 20.1 | 510 | 20.1 |
6 | STANDOVER HEIGHT | 455 | 17.9 | 705 | 27.8 | 460 | 18.1 |
7 | HEAD ANGLE | 69 DEGREES | 70 DEGREES | 69 DEGREES | |||
8 | SEAT ANGLE | 74 DEGREES | 75 DEGREES | 74 DEGREES | |||
9 | HEAD TUBE LENGTH | 180 | 7.1 | 180 | 7.1 | 180 | 7.1 |
10 | FORK LENGTH | 450 | 17.7 | 520 | 20.5 | 530 | 20.9 |
11 | FRONT CENTER | 730 | 28.7 | 720 | 28.3 | 730 | 28.7 |
12 | BB (BOTTOM BRACKET) DROP | 60 | 2.4 | 60 | 2.4 | 60 | 2.4 |
13 | FORK OFFSET | 30 | 1.2 | 40 | 1.6 | 30 | 1.2 |
14 | WHEELBASE | 120 | 4.7 | 1230 | 48.4 | 1120 | 44.1 |
15 | TOTAL LENGTH | 1940 | 76.4 | 1970 | 77.6 | 1960 | 77.2 |
16 | MAX SEAT HEIGHT | 970 | 38.2 | 1020 | 40.2 | 1030 | 40.6 |
17 | MIN SEAT HEIGHT | 970 | 38.2 | 860 | 33.9 | 870 | 34.3 |
18 | HANDLEBAR HEIGHT | 1080 | 42.5 | 1080 | 42.5 | 1150 | 45.3 |
19 | WEIGHT (WITHOUT BATTERY) | 28.1 KG | 61.9 LB | 28.9 KG | 63.7 LB | 29 KG | 63.9 LB |
Download Old Juggernaut User Manual HERE (very useful for all Biktrix eBikes)
Videos of the Biktrix Juggernaut Hub Duo 750W 52V Step-Through Fat Tire eBike
