1000W Mid-Drive

Motor Power

52V 17Ah 910Wh

est. 45mi Range

+5'8ft / 380lb

Max Load

Torque Sensor

Powerful Pedal Assist

25+ Point Quality

Control Checklist

Juggernaut Ultra Duo 2 SO

Name: Juggernaut Ultra Duo 2 Step-Over
Brand: biktrix-juggernaut-ultra-duo-2-electric-bike
SKU: JULDSOM273BK2
Price: 2699.0 USD
Availability: OutOfStock
Rating: 4.4 (84 reviews)

4.4

$2,699 USD $4,499 USD

1	Effective Top Tube Length	570mm	22.4in
2	Seat Tube Length (Classic Bike Size)	420mm	16.5in
3	Reach	460mm	18.1in
4	Stack	560mm	22in
5	Chainstay Length	510mm	20.1in
6	Standover Height	690mm	27.2in
7	Head Angle	71°	-
8	Seat Angle	73.5°	-
9	Head Tube Length	190 mm	7.5 in
10	Fork Length	530mm	20.9in
11	Front Center	700mm	27.6in
12	BB (Bottom Bracket) Drop	70mm	2.8in
13	Fork Offset	35mm	1.4in
14	Wheelbase	1220mm	48in
15	Total Length	2000mm	78.7in
16	Max Seat Height	990mm	39in
17	Min Seat Height	830mm	32.7in
18	Handlebar Height	1120mm	44.1in
19	Weight (Without Battery)	33.1kg	73lb

1	Effective Top Tube Length	610mm	24in
2	Seat Tube Length (Classic Bike Size)	470mm	18.5in
3	Reach	480mm	18.9in
4	Stack	570mm	22.4in
5	Chainstay Length	510mm	20.1in
6	Standover Height	730mm	28.7in
7	Head Angle	71°	-
8	Seat Angle	73.5°	-
9	Head Tube Length	190 mm	7.5 in
10	Fork Length	530mm	20.9in
11	Front Center	710mm	28in
12	BB (Bottom Bracket) Drop	70mm	2.8in
13	Fork Offset	35mm	1.4in
14	Wheelbase	1240mm	48.8in
15	Total Length	2020mm	79.5in
16	Max Seat Height	1040mm	40.9in
17	Min Seat Height	880mm	34.6in
18	Handlebar Height	1140mm	44.9in
19	Weight (Without Battery)	34kg	75lb

1	Effective Top Tube Length	630mm	24.8in
2	Seat Tube Length (Classic Bike Size)	520mm	20.5in
3	Reach	500mm	19.7in
4	Stack	580mm	22.8in
5	Chainstay Length	510mm	20.1in
6	Standover Height	760mm	29.9in
7	Head Angle	71°	-
8	Seat Angle	73.5°	-
9	Head Tube Length	190 mm	7.5 in
10	Fork Length	530mm	20.9in
11	Front Center	720mm	28.3in
12	BB (Bottom Bracket) Drop	70mm	2.8in
13	Fork Offset	35mm	1.4in
14	Wheelbase	1260mm	49.6in
15	Total Length	2040mm	80.3in
16	Max Seat Height	1080mm	42.5in
17	Min Seat Height	920mm	36.2in
18	Handlebar Height	1150mm	45.3in
19	Weight (Without Battery)	34.4kg	75.8lb

1000W Mid-Drive

Motor Power

52V 17Ah 910Wh

est. 45mi Range

+5'8ft / 380lb

Max Load

Torque Sensor

Powerful Pedal Assist

25+ Point Quality

Control Checklist

Distance Range (Single Battery)

PAS 1 Pedal-Assist Lv.1		84km Up To
PAS 2 Pedal-Assist Lv.2		70km Up To
PAS 3 Pedal-Assist Lv.3		61km Up To
PAS 4 Pedal-Assist Lv.4		56km Up To
PAS 5 Pedal-Assist Lv.5		50km Up To
THRL Throttle Only		35km Up To

**Please note that information regarding the expected range on a single stock battery 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 135mm 36h	Seat post 28.6mm
Fork Rst guide w/75mm travel, lockout and preload	Front axle 5mm qr	Seat post clamp Qr
Headset Threadless 1-1/8 1-1/2 tapered	Rear hub 197mm 36h	Motor Bafang ultra m620
Shifter rear Shimano alivio 9 speed trigger shifter	Rear axle 12mm thru	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 Shimano alivio 9 speed	Rims Black 36h 26" w/ round cutouts	Display Dpc-18
Cassette 9 speed 12-36t cassette	Tire sizes 26x4", 27.5x3"	Lights Integrated headlight, integrated taillight
Chain Kmc e9s	Handlebar 700mm wide, 50mm rise w/ 31.8mm clamp	Assist type Torque + cadence
Crank set 170mm arms 44t chainring	Stem 90mm solid	Assist levels 1-5
Bottom bracket Bafang ultra isis	Grips Slide-on comfort grips	Throttle Thumb throttle
Brakes Tektro e350 dual-piston brakes w/ 160mm rotors	Saddle Wide saddle	Other Front and rear fenders, rear rack, kickstand
Brake levers Tektro adjustable w/brake cutoffs

Frame 6061 aluminum	Front hub 135mm 36h
Seat post 28.6mm	Fork Rst guide w/75mm travel, lockout and preload
Front axle 5mm qr	Seat post clamp Qr
Headset Threadless 1-1/8 1-1/2 tapered	Rear hub 197mm 36h
Motor Bafang ultra m620	Shifter rear Shimano alivio 9 speed trigger shifter
Rear axle 12mm thru	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 Shimano alivio 9 speed	Rims Black 36h 26" w/ round cutouts
Display Dpc-18	Cassette 9 speed 12-36t cassette
Tire sizes 26x4", 27.5x3"	Lights Integrated headlight, integrated taillight
Chain Kmc e9s	Handlebar 700mm wide, 50mm rise w/ 31.8mm clamp
Assist type Torque + cadence	Crank set 170mm arms 44t chainring
Stem 90mm solid	Assist levels 1-5
Bottom bracket Bafang ultra isis	Grips Slide-on comfort grips
Throttle Thumb throttle	Brakes Tektro e350 dual-piston brakes w/ 160mm rotors
Saddle Wide saddle	Other Front and rear fenders, rear rack, kickstand
Brake levers Tektro adjustable w/brake cutoffs

Frame

6061 aluminum

Front hub

135mm 36h

Seat post

28.6mm

Fork

Rst guide w/75mm travel, lockout and preload

Front axle

5mm qr

Seat post clamp

Qr

Headset

Threadless 1-1/8 1-1/2 tapered

Rear hub

197mm 36h

Motor

Bafang ultra m620

Shifter rear

Shimano alivio 9 speed trigger shifter

Rear axle

12mm thru

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

Shimano alivio 9 speed

Rims

Black 36h 26" w/ round cutouts

Display

Dpc-18

Cassette

9 speed 12-36t cassette

Tire sizes

26x4", 27.5x3"

Lights

Integrated headlight, integrated taillight

Chain

Kmc e9s

Handlebar

700mm wide, 50mm rise w/ 31.8mm clamp

Assist type

Torque + cadence

Crank set

170mm arms 44t chainring

Stem

90mm solid

Assist levels

1-5

Bottom bracket

Bafang ultra isis

Grips

Slide-on comfort grips

Throttle

Thumb throttle

Brakes

Tektro e350 dual-piston brakes w/ 160mm rotors

Saddle

Wide saddle

Other

Front and rear fenders, rear rack, kickstand

Brake levers

Tektro adjustable w/brake cutoffs

Size & Fittings

1	Effective Top Tube Length	570mm	22.4in
2	Seat Tube Length (Classic Bike Size)	420mm	16.5in
3	Reach	460mm	18.1in
4	Stack	560mm	22in
5	Chainstay Length	510mm	20.1in
6	Standover Height	690mm	27.2in
7	Head Angle	71°	-
8	Seat Angle	73.5°	-
9	Head Tube Length	190 mm	7.5 in
10	Fork Length	530mm	20.9in
11	Front Center	700mm	27.6in
12	BB (Bottom Bracket) Drop	70mm	2.8in
13	Fork Offset	35mm	1.4in
14	Wheelbase	1220mm	48in
15	Total Length	2000mm	78.7in
16	Max Seat Height	990mm	39in
17	Min Seat Height	830mm	32.7in
18	Handlebar Height	1120mm	44.1in
19	Weight (Without Battery)	33.1kg	73lb

1	Effective Top Tube Length	610mm	24in
2	Seat Tube Length (Classic Bike Size)	470mm	18.5in
3	Reach	480mm	18.9in
4	Stack	570mm	22.4in
5	Chainstay Length	510mm	20.1in
6	Standover Height	730mm	28.7in
7	Head Angle	71°	-
8	Seat Angle	73.5°	-
9	Head Tube Length	190 mm	7.5 in
10	Fork Length	530mm	20.9in
11	Front Center	710mm	28in
12	BB (Bottom Bracket) Drop	70mm	2.8in
13	Fork Offset	35mm	1.4in
14	Wheelbase	1240mm	48.8in
15	Total Length	2020mm	79.5in
16	Max Seat Height	1040mm	40.9in
17	Min Seat Height	880mm	34.6in
18	Handlebar Height	1140mm	44.9in
19	Weight (Without Battery)	34kg	75lb

1	Effective Top Tube Length	630mm	24.8in
2	Seat Tube Length (Classic Bike Size)	520mm	20.5in
3	Reach	500mm	19.7in
4	Stack	580mm	22.8in
5	Chainstay Length	510mm	20.1in
6	Standover Height	760mm	29.9in
7	Head Angle	71°	-
8	Seat Angle	73.5°	-
9	Head Tube Length	190 mm	7.5 in
10	Fork Length	530mm	20.9in
11	Front Center	720mm	28.3in
12	BB (Bottom Bracket) Drop	70mm	2.8in
13	Fork Offset	35mm	1.4in
14	Wheelbase	1260mm	49.6in
15	Total Length	2040mm	80.3in
16	Max Seat Height	1080mm	42.5in
17	Min Seat Height	920mm	36.2in
18	Handlebar Height	1150mm	45.3in
19	Weight (Without Battery)	34.4kg	75.8lb

FAQ & Guides

Manual eBike Display Manuals
Guide Spare Parts Finder
FAQ I just received my eBike - what next?
FAQ I just assembled my eBike, what next?
FAQ Recommended Tire Pressure and Inflation Levels
FAQ eBike Battery Care Guide

Need A Hand?

Chat With Us

We are always excited to hear from you. Just click the button below to activate chat now.

Chat Now

Book A Virtual Demo

Our eBike specialists can help you find your dream eBike and answer any questions you may have.

Book An Appointment Now

Give Us A Ring

24/7 e-mail support. 8/5 phone and live chat with eBike Specialists to help you in anyway.

+1-866-BIKTRIX

How was the performance of the bike?:

Poor

Excellent

How comfortable was the bike?:

Uncomfortable

Very Comfortable

How was the bike build?:

Poor

Excellent

After one ride

I did a previous review and said my Juggernaut Ultra Duo 4 is sluggish on hills. That is still the case, but outside that the bike is amazing with excellent handling, ride and quality.
Maybe after more riding I will get used to what needs to be done to increase climbing capacity.

How was the performance of the bike?:

Poor

Excellent

How comfortable was the bike?:

Uncomfortable

Very Comfortable

How was the bike build?:

Poor

Excellent

Juggernaut Ultra Duo

Very happy with my new bike from Biktrix. Received without any issues other than taking a little longer than expected. However upon getting my delivery putting the bike together was easy. We took the first day putting the bike together, and reading up on the directions. The next day we ride the bike without using the battery just for setup. We have rode our new bikes everyday using the pedal assist when needed, and everything is fine. The one issue I’ve had is the the seats quite squeaky.

How was the performance of the bike?:

Poor

Excellent

How comfortable was the bike?:

Uncomfortable

Very Comfortable

How was the bike build?:

Poor

Excellent

New Biktrix Owner

Great service, great new Juggernaut Ultra Duo 4. Awesome ride!

How was the performance of the bike?:

Poor

Excellent

How comfortable was the bike?:

Uncomfortable

Very Comfortable

How was the bike build?:

Poor

Excellent

No bike no review

Still waiting for my bike no confirmed delivery date…

How was the performance of the bike?:

Poor

Excellent

How comfortable was the bike?:

Uncomfortable

Very Comfortable

How was the bike build?:

Poor

Excellent

Juggernaut Ultra Duo

Awesome bike; shipped very quick and was amazed at the color I selected. We were also amazed at the colour options; very good. Very excited for a Canadian made bike. Keep on doing what your doing

Impressed with pre-sales customer support

I have been researching e-bikes for 2 years. I made my decision to go with Biktrix and ended up with the Juggernaut Ultra Duo 4 SO. I had many conversations with team members at Biktrix and I am very appreciative they helped me identify the right bike since I was not able to try it before buying it. They also recommended the right size and fit and some excellent options and configured the bike before shipping it with the additional options. I was also impressed with the range of videos and online support they offer. There are cheaper options online but for something as specialized as an E-Bike, I was eager to find a vendor that could prove they would provide adequate support by phone/email etc. I see this as exceptional value. Assembling it was easy and it was fully operational shortly after I received the shipment. I am very pleased with this purchase and would highly recommend Biktrix to anyone wanting to buy an E-Bike online.

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.

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.

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.

1 2 3