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✔️ ​1000W Bafang Ultra M620 Mid-drive Motor
​✔️ ​160Nm of torque for extreme hills
​✔️ ​265lb load capacity
​✔️ ​On-Demand throttle for full power when you need it
​✔️ ​Cadence+Torque sensor makes pedal assist smooth and powerful
✔️ ​Includes one 52V 17Ah Battery (and charger) with the capability to install a second battery


The best-built full-suspension fat tire eBike available.

"This bike has exceeded my expectations in every way!" - Travis

*Rider heights are recommendations. Please refer to bike geometry for full fit detail here

Full Suspension. Full Performance.

Top-of-the-line components and the most powerful torque-sensing mid-drive motor in the industry makes the Juggernaut Ultra FS Pro 2 the best-built full-suspension electric bike on the market. Now available with an optional range extender battery to add on an additional 50km of range!

maximum traction

With a quality FS system, both wheels stay connected with the ground. That means better handling and higher speeds on tough terrain. This bike is built for the trail.

Product Features

Bafang Ultra M620 Mid-Drive System

The Bafang M620 system features the G510 electric motor with over 1500 watts of peak power, 160Nm of torque and torque-sensing assist. Span cities, climb hills, and explore all the places you want to go with ease.

Rockshox Rear Suspension

The rear suspension sets the Ultra FS Pro apart from the rest of our lineup, making it the ultimate eBike. Take on any trail with maximum comfort and control

Optional Range Extender

On top of the stock 52V 17Ah battery add on a range extender battery to gain an additional 50-60km of range

Front Suspension

The RST Renegade air fork provides 100mm of travel with pre-load and lockout adjustability


The SRAM NX 11-speed drivetrain has the versatility to provide max torque while climbing hills and max speed on the flats.

Hydraulic Disc Brakes

When it's so easy to go fast on an electric bike, you need strong stopping power. These hydraulic disc brakes will swiftly and reliably bring you to a halt.

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.

Thumb Throttle & Control Pad

With just a push of the thumb you can access the motor's full power! No need to pedal, just sit back and enjoy the ride. The control pad allows you to turn the bike on/off and adjust your settings.

Integrated Front Light

This bright LED light is powered by the bike's battery and can be turned on/off with a button on the handlebar control pad.

Technical Specifications

Size & Fittings

17" M Frame 19" L Frame 20" XL Frame

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Customer Reviews

Based on 222 reviews
James Bowman

Juggernaut Ultra FS Pro

Jeff Schreckler
“I Found The Fountain Of Youth “ J.Schreck Mad History Adventures

We do Extreme Adventures in the Southwest United States and I have been looking at various machines for exploration . After deciding on an e-bike the next task was picking a manufactuer . Communication and rugged quality was a major concern in the process. My choice ended when I called Biktrix . The staff guided me thru the process and it was painless . I look forward taking you along with me as we go explore the great desert wilderness Let Ride ! J.Schreck

Steven Conklin
Excellent Purchase Experience

From website, videos to customer service & purchase was awesome. Comparing the Biktrix Juggernaut FS Pro to other brands was easy to rule out Brands with worse websites & worse customer service. I purchased the bike on a Saturday online and was shipped on the following Tuesday & would have been delivered in 3 days from Saskatoon to NJ, but was delayed because of rain and flooding conditions in Memphis FedEx Freight delivered in 4 business days the Monday after. Finally got to put bike together 2 days later and happily riding the bike ever since. Have a single track ride planned today and expect to have a fun ride. Thanks Biktrix

Jim Roal
Awesome off-road machine

This is my second electric mountain bike. The first was a Rurui XT10 with hub drive and it was not well suited for off-road riding. This bike is! I like more serious off-road riding. I just completed my first 30 miles, mostly off-road. It included long, steep, loamy hills. My last ride was a 22 mile loop that has over 2,900 feet of ascent. Lower rider fatigue than other bikes as well. This off-road riding tends to eat batteries but I went about 30 miles on this charge and had 52% remaining without a range extender battery. Here is a YouTube video of parts of that 22 mile loop: https://youtu.be/NcHmBKLUrgU .

Kevin Pigeon
Juggernaut Ultra Pro 3

I am so happy with the purchase of my Ultra FS Pro 3 . I still can’t believe how much floatation is created by the 4” tires on semi packed snow. The battery performance is amazing as well. I had been considering a Biktrix purchase for a long time. I am so happy I pulled the trigger , now I can’t wait for summer riding. Thanks Biktrix. 56 yr old KP from central B.C Canada

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