Juggernaut Ultra Duo 3 SO

Sale price CA$3,599.00 Regular priceCA$6,499.00

This item has been replaced!

Still Interested in the Juggernaut Ultra Duo Step-Over? Check out the Juggernaut Ultra Duo Step-Over 4 below!

Juggernaut Ultra Duo 4 Step-Over
1000W Mid-Drive

Motor Power

160Nm of Torque

Extreme Hills

52V 17Ah 910Wh

est. 70km Range

+5'6ft / 380lb

Max Load

Torque Sensor

Powerful Pedal Assist

25+ Point Quality

Control Checklist

90+

Miles Range

160Nm

Torque For Extreme Hills

52V 17Ah

Strong, Reliable Battery

The Duo Series. Ebikes For Everyone.

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.

Watch this video to see how The 3 Duo models stack up.

Welcome To The Big Leagues.

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.

Performance. Fully Loaded.

Distance Range

PAS 1
Pedal-Assist Lv.1
84km
PAS 2
Pedal-Assist Lv.2
70km
PAS 3
Pedal-Assist Lv.3
61km
PAS 4
Pedal-Assist Lv.4
56km
PAS 5
Pedal-Assist Lv.5
50km
THRL
Throttle Only
35km
**Please note that information regarding the expected range on a single charge on one of our e-bikes is an estimate, not a guarantee. There are many factors that contribute to the actual, real-world range for an e-bike battery such as the age of the battery, temperature, level of assist, speed, payload, and terrain. Depending on these various conditions, it is possible to get less than the expected minimum range or greater than the expected maximum range.

Technical Specifications

Frame
6061 aluminum
Front hub
150mm 36h
Seat post
Aluminum 28.6mm
Fork
Rst renegade coil spring w/100mm travel, lockout & preload
Front axle
15mm qr-thru axle
Seat post clamp
Qr
Headset
Threadless 1-1/8 1-1/2 tapered
Rear hub
190mm 36h
Motor
Bafang m620 ultra
Shifter rear
Sram 11 speed trigger shifter
Rear axle
5mm qr
Battery sizes
Total capacity of 52v 36.5ah 1898wh:
52v 17.5ah 910wh (internal battery) +
up to 52v 19ah 988wh (external range extender battery)
Rear derailleur
Sram nx 11 speed
Rims
Black 24", 26", 27.5" 36h
Display
Dpc-18
Cassette
11 speed sram 11-42t cassette
Tire sizes
24x4", 26x4", 27.5x3"
Lights
Integrated headlight, taillight
Chain
Kmc e11s
Handlebar
650mm wide mtb w/30mm rise, 31.8mm clamp
Assist type
Torque + cadence
Crank set
44t 170mm arms
Stem
90mm adjustable
Assist levels
0-5
Bottom bracket
Bafang isis
Grips
Slide-on comfort grips
Throttle
Thumb throttle
Brakes
Biktrix dual piston hydraulic w/ 180mm rotors
Saddle
Biktrix spring supported comfy cruiser
Other
Front and rear metal fenders, rear rack, kickstand
Brake levers
Biktrix w/ adjustable reach and motorcutoffs
Rear suspension
N/a (l | 19" so)/none (l | 19" st)/none (m | 17" so)/none (m | 17" st)
Frame
6061 aluminum
Front hub
150mm 36h
Seat post
Aluminum 28.6mm
Fork
Rst renegade coil spring w/100mm travel, lockout & preload
Front axle
15mm qr-thru axle
Seat post clamp
Qr
Headset
Threadless 1-1/8 1-1/2 tapered
Rear hub
190mm 36h
Motor
Bafang m620 ultra
Shifter rear
Sram 11 speed trigger shifter
Rear axle
5mm qr
Battery sizes
Total capacity of 52v 36.5ah 1898wh:
52v 17.5ah 910wh (internal battery) +
up to 52v 19ah 988wh (external range extender battery)
Rear derailleur
Sram nx 11 speed
Rims
Black 24", 26", 27.5" 36h
Display
Dpc-18
Cassette
11 speed sram 11-42t cassette
Tire sizes
24x4", 26x4", 27.5x3"
Lights
Integrated headlight, taillight
Chain
Kmc e11s
Handlebar
650mm wide mtb w/30mm rise, 31.8mm clamp
Assist type
Torque + cadence
Crank set
44t 170mm arms
Stem
90mm adjustable
Assist levels
0-5
Bottom bracket
Bafang isis
Grips
Slide-on comfort grips
Throttle
Thumb throttle
Brakes
Biktrix dual piston hydraulic w/ 180mm rotors
Saddle
Biktrix spring supported comfy cruiser
Other
Front and rear metal fenders, rear rack, kickstand
Brake levers
Biktrix w/ adjustable reach and motorcutoffs
Rear suspension
N/a (l | 19" so)/none (l | 19" st)/none (m | 17" so)/none (m | 17" st)
Frame
6061 aluminum
Front hub
150mm 36h
Seat post
Aluminum 28.6mm
Fork
Rst renegade coil spring w/100mm travel, lockout & preload
Front axle
15mm qr-thru axle
Seat post clamp
Qr
Headset
Threadless 1-1/8 1-1/2 tapered
Rear hub
190mm 36h
Motor
Bafang m620 ultra
Shifter rear
Sram 11 speed trigger shifter
Rear axle
5mm qr
Battery sizes
Total capacity of 52v 36.5ah 1898wh:
52v 17.5ah 910wh (internal battery) +
up to 52v 19ah 988wh (external range extender battery)
Rear derailleur
Sram nx 11 speed
Rims
Black 24", 26", 27.5" 36h
Display
Dpc-18
Cassette
11 speed sram 11-42t cassette
Tire sizes
24x4", 26x4", 27.5x3"
Lights
Integrated headlight, taillight
Chain
Kmc e11s
Handlebar
650mm wide mtb w/30mm rise, 31.8mm clamp
Assist type
Torque + cadence
Crank set
44t 170mm arms
Stem
90mm adjustable
Assist levels
0-5
Bottom bracket
Bafang isis
Grips
Slide-on comfort grips
Throttle
Thumb throttle
Brakes
Biktrix dual piston hydraulic w/ 180mm rotors
Saddle
Biktrix spring supported comfy cruiser
Other
Front and rear metal fenders, rear rack, kickstand
Brake levers
Biktrix w/ adjustable reach and motorcutoffs
Rear suspension
N/a (l | 19" so)/none (l | 19" st)/none (m | 17" so)/none (m | 17" st)

Size & Fittings

1
Effective Top Tube Length
590mm 23.2in
2
Seat Tube Length (Classic Bike Size)
470mm 18.5in
3
Reach
440mm 17.3in
4
Stack
660mm 26in
5
Chainstay Length
510mm 20.1in
6
Standover Height
730mm 28.7in
7
Head Angle
70° -
8
Seat Angle
73° -
9
Head Tube Length
180 mm 7.1 in
10
Fork Length
540mm 21.3in
11
Front Center
730mm 28.7in
12
BB (Bottom Bracket) Drop
60mm 2.4in
13
Fork Offset
40mm 1.6in
14
Wheelbase
1230mm 48.4in
15
Total Length
2000mm 78.7in
16
Max Seat Height
1050mm 41.3in
17
Min Seat Height
880mm 34.6in
18
Handlebar Height
1140mm 44.9in
19
Weight (Without Battery)
35kg 77.2lb
1
Effective Top Tube Length
540mm 21.3in
2
Seat Tube Length (Classic Bike Size)
460mm 18.1in
3
Reach
500mm 19.7in
4
Stack
540mm 21.3in
5
Chainstay Length
520mm 20.5in
6
Standover Height
430mm 16.9in
7
Head Angle
68° -
8
Seat Angle
71° -
9
Head Tube Length
180 mm 7.1 in
10
Fork Length
540mm 21.3in
11
Front Center
730mm 28.7in
12
BB (Bottom Bracket) Drop
50mm 2in
13
Fork Offset
40mm 1.6in
14
Wheelbase
1240mm 48.8in
15
Total Length
2000mm 78.7in
16
Max Seat Height
1000mm 39.4in
17
Min Seat Height
880mm 34.6in
18
Handlebar Height
1100mm 43.3in
19
Weight (Without Battery)
35kg 77.2lb
1
Effective Top Tube Length
590mm 23.2in
2
Seat Tube Length (Classic Bike Size)
420mm 16.5in
3
Reach
440mm 17.3in
4
Stack
660mm 26in
5
Chainstay Length
500mm 19.7in
6
Standover Height
690mm 27.2in
7
Head Angle
70° -
8
Seat Angle
73° -
9
Head Tube Length
180 mm 7.1 in
10
Fork Length
540mm 21.3in
11
Front Center
720mm 28.3in
12
BB (Bottom Bracket) Drop
60mm 2.4in
13
Fork Offset
40mm 1.6in
14
Wheelbase
1230mm 48.4in
15
Total Length
2000mm 78.7in
16
Max Seat Height
1000mm 39.4in
17
Min Seat Height
830mm 32.7in
18
Handlebar Height
1120mm 44.1in
19
Weight (Without Battery)
34kg 75lb
1
Effective Top Tube Length
580mm 22.8in
2
Seat Tube Length (Classic Bike Size)
420mm 16.5in
3
Reach
580mm 22.8in
4
Stack
490mm 19.3in
5
Chainstay Length
480mm 18.9in
6
Standover Height
450mm 17.7in
7
Head Angle
68° -
8
Seat Angle
71° -
9
Head Tube Length
180 mm 7.1 in
10
Fork Length
540mm 21.3in
11
Front Center
710mm 28in
12
BB (Bottom Bracket) Drop
40mm 1.6in
13
Fork Offset
40mm 1.6in
14
Wheelbase
1240mm 48.8in
15
Total Length
1960mm 77.2in
16
Max Seat Height
1000mm 39.4in
17
Min Seat Height
830mm 32.7in
18
Handlebar Height
1160mm 45.7in
19
Weight (Without Battery)
34kg 75lb

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Customer Reviews

Based on 103 reviews
71%
(73)
12%
(12)
10%
(10)
1%
(1)
7%
(7)
L
Latin Louie
Great Bike, well made and have had it for one week now!

I am really enjoying riding my new Juggernaut Ultra Duo 2 Step-Over. It has been 5 years since I have had ridden a bike. My old English 10 speed with the skinny tires got ruined in a flood and I never replaced it until now. I carefully investigated many of the available E-Bikes and listened carefully to many of the reviews on Biktrix Bikes. I made a decision to buy one and very happy that I did. Power assist is a different feel, and I am taking is slowly as recommended. The Biktix staff has been most helpful and you can't ask for more than that. I highly recommend getting your E-Bike from this company.

l
leonard Cervo
Ultra duo 3

Received e-bike, very easy to finish set up of bike. Already been on two rides

H
Harold Leasure
Juggernaut Ultra duo 3

Bike had no damage and was packed nice. The chocolate pearl is different but for the price i can live with it. Both tires were almost flat and rear fender bolt on frame was not tightened but easy fixes. Assembly was simple and bike feels lighter than my Juggernaut classic duo step-over, may be the 27.5x 3 tires versus 26x4 on the classic duo. Rear derailer will need to be indexed but shifts smooth and brakes although they are Biktrix brand work well and no noise. Motor is much noisier on this bike than i expected, may just need greased more. Torque sensor is taking some time to get used to versus cadence on my other Biktrix bike. In sport mode or using throttle this bike will move. Very comfortable riding bike with plenty of adjustability. The brake light is a nice touch versus just a tail light. Only 58 miles in 2 rides so far but for the price was a great deal.

J
Jonathon
It's ok

I feel like the drivetrain needs to be beefed up. I took a ride after assembly and the chain was skipping in the highest gears. Durring my ride i rode up a steep hill in first gear and the chain snapped. Biktrix did send out a new chain after i contacted them. When i put the new chain on upon inspection the cassette has a few bent and broken teeth on gears 1,2,7,8,9.

D
DAVID MC GAVOCK
Ultra Duo is a great fit for me

I spent hours on the Biktrix website comparing the various models and alternative features of the models. I decided the Ultra Duo was the most affordable and best fit for me. Since it arrived I have ridden it on gravel and pavement and dirt pathways. It handles well in all environments. I really enjoy the ride. While I still have much to learn about the features I know that I will get many happy miles out of this beauty. Also glad that I sprung for the Biktrix A-bar and the comfort grips.