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 88 reviews
stephen bardfield

I live in New York, in the heart of the Catskill mountains where every hill leads to another hill. We are are 600m elevation and there are no straight or flat roads. My health is of the utmost importance having had a bi lateral knee replacement 8 years ago biking is what keeps all the moving parts moving. At 76 I need a little help on those uphill grades and my FS Pro 2 does that. We usually ride for 40-50 k every other day. Plenty of battery and more than I need. As all these roads are secondary we have a fair amount of rough terrain and with the extra suspension I barely feel a bump Always and easily in control the entire ride. Just incredible.

Roberto De Macedo
Better than I expected,

The bike is all I was expecting and way more, The shipping and communication was spot on and very quick to reply to changes that I requested after the purchase. And I just had the best time ever riding trails whit my son in Colorado, no disappointments only great times … thanks

Jonathan Sabey
Awesome Ebike!

Awesome bike for the price. Great customer service from ordering to receiving. Bike was secured and packed well.

Lino Savino
Outstanding bike and great service!

Received my bike in less then a week! This bike had exceeded all of my expectations thus far. Fit and finish, build quality and overall geometry is top notch. Solid MTB, I will enjoy this for many years to come.

After this purchase I will definitely continue to be a customer in the future.

Thank you Biktrix!

Jordan Keyes
Mid Drive motor for the win 🏆

I own several bikes from a rival E-Bike competitor. I can say the Biktrix build quality and components are setting the bar very high in the E-bike world.

Paul Madracki
Ultra fs pro

Great bike for the hills in my area, way more power than my old hub drive bike. Swapped out the seat 4 times now still struggling to find one that will go the distance, after 25-30 km they all become uncomfortable. I really add value to having a kickstand but the one that came with the bike had a loose fit even with the tape you put in, also my heel would clip it every now and again. Have since removed it before I get hurt. At 64 the bike is blast to ride I try and get out every day, my knees wouldn't let me do this on a regular bike. Thanks for the speedy assembly and delivery.

christopher ripley

Juggernaut Ultra FS Pro

Leonida Francisco
High n beast

The only things the shifer handle is so short I notice the charger is not showing the green light

Scott Wiskin
Awesome bike!

No big rides yet but the short rides have been very fun. Still learning how everything works. Biktrix has been a pleasure to deal with.