Juggernaut Ultra Duo 3 Step-Thru Sale

Sale price $3,499.00 Regular price$4,799.00
Coral Pearl
Shipping: Leaves within 6-7 business days
Sale price $3,499.00 Regular price$4,799.00
Lifetime support
14 Days Return
Custom Built



✔️ 1000W Bafang Ultra M620 Mid-drive Motor
​✔️ ​160Nm of torque for easy to moderate hills
​✔️ ​300lb load capacity
​✔️ ​On-Demand throttle makes pedaling optional
​✔️ ​Cadence+Torque sensor makes pedal assist smooth and powerful
✔️ ​Includes 52V 17.5Ah 910Wh internal battery + charger

 Most Powerful Torque Sensor Electric Bike On The Market Today. Bafang Ultra M620

"Riding the Juggernaut Ultra Duo is nothing less than happy kid face again!" - Edward

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Customer Reviews

Based on 110 reviews
Jon Allen
Solid Quality

I own four other e-bikes, and sprung for the Juggernaut Ultra Duo 4. I finally can say that I am happy with an e-bike. The Juggernaut Ultra Duo 4 is the perfect bike for my area. I live in Southwestern PA where we have rolling hills everywhere, and most of the are steep and hard to climb even with an e-bike.

It arrived rather fast, it was packaged well and was easy to assemble. There is really no assembly. Just mount the front wheel and handlebars, that is it. Takes about 30-40 minutes including unpacking. I did a once over to ensure everything was tightened, pumped up the tires and plugged in the batteries. They needed several hours to fully charge. There was a small issue the front brake rotor (disc) that was quilckly replaced by Biktrix. It arrived today and it took about 20 minutes to replace. Now I am ready.

We had a sunny warm day today, so I took it out for a 12 mile break in ride on some seriously steep and long hills. I am 60 years old, 6ft tall, 250 lbs, and partially disabled. These e-bikes give me a certain freedom like no other activity. The Juggernaut Ultra Duo 4 is a serious powerhouse and allows me to navigate any roads or prepared paths that we have around here. I was going up hills with over 26% grade like nothing. And the Dual battery configuration will allow me to do that all day long. My other e-bikes would not make the hills leaving me to walk them partially, and after the same 12 mile ride, the batteries were 50% depleted. The Juggernaut Ultra Duo 4 used only 6% I was amazed that I still had 94% after the ride.

The Juggernaut Ultra Duo 4 is solid and very high quality. It shifts smooth, rides smooth, is very comfortable and it looks great. I had one customization by adding the A-Handlebars for a more swept back ride that allows me to sit fully upright when riding. This is a terrific e-bike that finally fulfills my needs and wishes. I love it and I highly recommend it.

James Wolford
Juggernaut Ultra Duo 4 Step-Thru?

Lots of power. Easy to assemble . So far I haven't put many K on the bike.

Richard Meissner
Love the bike👍😊

Riding the bike with the mid drive is great. I was use to have a hub drive. I can tell I’m going to love this bike.

George Felegy
A lot of ebike

The bike is heavy and fast. It runs and rides like a small electric motorcycle which for me ( a motorcyclist for many years), it is perfect. For a novice ebike rider it may be too much bike to handle. Going from a lightweight regular bike to this might be overwhelming. The weight, wide 3” tires, and raw power is a handful, but an absolute blast if handled properly. I love it.

Quality built bikes and fantastic customer service

Bought the Ultra Duo 4. Its a hill climbing machine.
and the customer service is next to none.
5 star +.

Craig Mottice

All that I expected and more! Plus, excellent customer service.

James Bean
Great product

First time ebike rider and at 60 years old I feel like a kid again ..I get out and do 30 k a day like a breeze and the pedal assist has helped with back issues ..so win win 🏆 keep the great support 👍 thanks again

Keith Chapman
They are very helpful in fixing problems

I received the bike , in the first week I had problems , but Clayton called me and is going out of his way to be helpful and provide GOOD ! Customer service . He’s been helpful and made a bad situation ALOT better . I would highly recommend Biktrix customer service and help they provide . Even though I did have trouble they stepped right up to the plate with good customer service

Daniel Ives

Having problems with disc front brakes. Very difficult for me to do everything by email. Would love a direct phone number to talk to someone.
My number is