Biktrix Juggernaut Ultra Duo 3 1000W 52V 17Ah Step-Through Fat Tire Mid Drive Electric Bicycle with 5 Levels of Pedal Assist and Thumb Throttle
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New stock - Latest model. Limited Supply.
The Juggernaut Duo Series is all about flexibility. Hub-drive or mid-drive, step-over or step-thru, single battery or dual battery (*), entry-level or high-end. No matter your needs, there's probably a Duo for you.
(*) This option adds an extra battery that mounts on top of the frame which doubles the range of the stock battery.
Features of the Biktrix Juggernaut Ultra Duo 3 1000W 52V Step-Through 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 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 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 300 lbs. load capacity (depends on the fork you choose)
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.
The Ultra Duo sits at the top of the Duo range, so naturally, it boasts one of the most powerful motor systems available today. The Bafang Ultra M620 mid-drive motor is loaded with 1500W of peak power and 160Nm of torque. Pair that with the 11-speed drivetrain and you'll be nearly unstoppable.
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 5'5" / 30IN inseam 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 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-Through Fat Tire Mid-Drive electric bicycle.

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-Through 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-Through 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" and 24x4" tires with a 26x4" set to handle the toughest terrain and weather conditions.
You can also add an extra battery that mounts to the bike frame to increase the bike's range.

Thee ways to ride the Biktrix Juggernaut Ultra Duo 3 1000W 52V Step-Through 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-Through 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-Through Fat Tire Mid-Drive eBike
FRAME |
6061 Aluminum
|
BRAKES |
Biktrix Dual Piston Hydraulic w/ 180mm Rotors
|
BATTERY SIZES |
Total Capacity of 52V 36.5Ah 1898Wh:
|
52V 17.5Ah 910Wh (Internal Battery) +
|
|
up to 52V 19Ah 988Wh (External Range Extender Battery)
|
|
FORK |
RST Renegade Coil Spring w/100mm Travel, Lockout & Preload
|
BRAKE LEVERS |
BIKTRIX W/ ADJUSTABLE REACH AND MOTORCUTOFFS
|
HEADSET |
Threadless 1-1/8 1-1/2 Tapered
|
HANDLEBAR |
650mm Wide MTB w/30mm Rise, 31.8mm Clamp
|
SHIFTER REAR |
SRAM 11 Speed Trigger Shifter
|
STEM |
90mm Adjustable
|
REAR DERAILLEUR |
SRAM NX 11 Speed
|
GRIPS |
Slide-On Comfort Grips
|
CASSETTE | SRAM 11-42T |
SEAT POST |
Aluminum 28.6mm
|
CHAIN | KMC e11S |
SEAT POST CLAMP | QR |
CRANK SET |
44T 170mm Arms
|
SADDLE |
Biktrix Spring Supported Comfy Cruiser
|
BOTTOM BRACKET | Bafang ISIS |
MOTOR |
Bafang M620 Ultra
|
FRONT HUB | 150mm 36H |
DISPLAY | DPC-18 |
FRONT AXLE/SKEWER |
15mm QR-Thru Axle
|
LIGHTS |
Integrated Headlight, Taillight
|
REAR HUB | 190mm 36H |
THROTTLE |
Thumb Throttle
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REAR AXLE/SKEWER | 5mm QR |
ASSIST LEVELS | 0-5 |
RIMS |
Black 24", 26", 27.5" 36H
|
ASSIST TYPE |
Torque + Cadence
|
TIRES |
24x4", 26x4", 27.5x3"
|
OTHER |
Front and Rear Metal Fenders, Rear Rack, Kickstand
|
17" STEP-THRU |
18.5" STEP-OVER
|
18.5" STEP-THRU
|
20" TIRE STEP-THRU
|
||||||
MM | INCHES | MM | INCHES | MM | INCHES | MM | INCHES | ||
1 | EFFECTIVE TOP TUBE LENGTH | 590 | 23.2 | 560 | 22 | 580 | 22.8 | 620 | 24.4 |
2 | SEAT TUBE LENGTH (CLASSIC BIKE SIZE) | 420 | 16.5 | 470 | 18.5 | 470 | 18.5 | 420 | 16.5 |
3 | REACH | 440 | 17.3 | 460 | 18.1 | 420 | 16.5 | 540 | 21.3 |
4 | STACK | 640 | 25.2 | 600 | 23.6 | 670 | 26.4 | 600 | 23.6 |
5 | CHAINSTAY LENGTH | 490 | 19.3 | 510 | 20.1 | 520 | 20.5 | 430 | 16.9 |
6 | STANDOVER HEIGHT | 450 | 17.7 | 705 | 27.8 | 460 | 18.1 | 420 | 16.5 |
7 | HEAD ANGLE | 66 DEGREES | 70 DEGREES | 66 DEGREES | 67 DEGREES | ||||
8 | SEAT ANGLE | 72 DEGREES | 75 DEGREES | 72 DEGREES | 73 DEGREES | ||||
9 | HEAD TUBE LENGTH | 180 | 7.1 | 180 | 7.1 | 180 | 7.1 | 190 | 7.5 |
10 | FORK LENGTH | 450 | 17.7 | 520 | 20.5 | 530 | 20.9 | 430 | 16.9 |
11 | FRONT CENTER | 730 | 28.7 | 720 | 28.3 | 730 | 28.7 | 780 | 30.7 |
12 | BB (BOTTOM BRACKET) DROP | 60 | 2.4 | 60 | 2.4 | 60 | 2.4 | 30 | 1.2 |
13 | FORK OFFSET | 30 | 1.2 | 40 | 1.6 | 30 | 1.2 | 30 | 1.2 |
14 | WHEELBASE | 1200 | 47.2 | 1230 | 48.4 | 1220 | 48 | 1220 | 48 |
15 | TOTAL LENGTH | 1900 | 74.8 | 1970 | 77.6 | 1960 | 77.2 | 1850 | 72.8 |
16 | MAX SEAT HEIGHT | 970 | 38.2 | 1020 | 40.2 | 1030 | 40.6 | 950 | 37.4 |
17 | MIN SEAT HEIGHT | 800 | 31.5 | 860 | 33.9 | 870 | 34.3 | 800 | 31.5 |
18 | HANDLEBAR HEIGHT | 1120 | 44.1 | 1080 | 42.5 | 1150 | 45.3 | 1080 | 42.5 |
19 | WEIGHT (WITHOUT BATTERY) | 28.1 KG | 61.9 LB | 28.9 KG | 63.7 LB | 29 KG | 63.9 LB | N/A |

Download Old Juggernaut User Manual HERE (very useful for all Biktrix eBikes)
Videos of the Biktrix Juggernaut Ultra Duo 3 1000W 52V Step-Through Fat Tire Mid-Drive eBike
