Juggernaut Ultra Duo Pro ST

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Regular price $3,199.00
Regular price -20% $3,999.00 Sale price $3,199.00

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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.

Mid-Drive Motor

The Bafang Ultra M620 mid-drive motor features 1000 watts of power and 160Nm of torque. Span cities, climb hills, and explore all the places you want to go with ease.

LCD Display

The LCD display shows all kinds of important information about your ride including speed, battery life, odometer, pedal assist level and more.

Thumb Throttle & Control Pad

With just a push of the thumb, you can access all of the power the motor has to offer. No need to pedal, just sit back and enjoy the ride.

Suspension Fork

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


From climbing hills to holding maximum speed on the flats, the SRAM NX 11-speed drivetrain has you covered.

Hydraulic Disk Brakes

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

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.

Optional Range Extender

Multiple range-extender battery options can expand your eBike's range all the way to 100 miles.

Rack & Fenders

These fenders will keep you and your bike clean. Need to carry some gear? Strap on the rear rack and make your way!

Juggernaut Ultra Duo Pro ST Specifications

6061 Aluminum
Front Hub
150mm 36h
Seat Post
Aluminum 28.6mm
Rst Renegade Coil Spring W/100mm Travel, Lockout & Preload
Front Axle
15mm Qr-Thru Axle
Seat Post Clamp
Threadless 1-1/8 1-1/2 Tapered
Rear Hub
190mm 36h
Bafang M620 Ultra
Shifter Rear
Sram 11 Speed Trigger Shifter
Rear Axle
5mm Qr
Battery Sizes
Total Capacity Of 52v 34ah 1794wh:
52v 17.5ah 910wh (Internal Battery) +
Up To 52v 17ah 884wh (External Range Extender Battery)
Rear Derailleur
Sram Nx 11 Speed
Black 24", 26", 27.5" 36h
11 Speed Sram 11-42t Cassette
Tire Sizes
24x4", 26x4", 27.5x3"
Integrated Headlight, Taillight
Kmc E11s
650mm Wide Mtb W/30mm Rise, 31.8mm Clamp
Assist Type
Torque + Cadence
Crank Set
44t 170mm Arms
90mm Adjustable
Assist Levels
Bottom Bracket
Bafang Isis
Slide-On Comfort Grips
Thumb Throttle
Biktrix Dual Piston Hydraulic W/ 180mm Rotors
Biktrix Spring Supported Comfy Cruiser
Front And Rear Metal Fenders, Rear Rack, Kickstand
Brake Levers
Biktrix W/ Adjustable Reach And Motorcutoffs