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1000W Ultra Mid-Drive

Motor Power

160Nm of Torque

Extreme Hills

52V 17Ah 910Wh

est. 90mi/140km range

300lb

Load Capacity

+5'2ft

Rider Height

Cadence + Torque Sensor

Smooth & Powerful Pedal Assist

Juggernaut Ultra Duo 3 Step-Thru

19" fits riders 5'5" | 30in inseam and taller (In Stock and Shipping)

What frame will fit me?

×

The best way to ensure a fit is to check this measurement on your existing bike’s normal riding seat position;

If this measurement is equal to or MORE than the minimum seat height of the selected model then the selected frame size will work, however, if it is LESS you need to select a smaller frame.

 

If you do not have a bike then measure your inseam like this;

For most riders, the frame will work if their inseam is at least 2 inches less than the minimum seat height in inches. For example, a rider with an inseam of 28 inches can fit on a bike with a minimum seat height of 30 inches (30 - 2 = 28).

If you want to have a flat foot on the ground while on a full stop then your inseam must be equal to or greater than the minimum seat height listed for that frame size.


If you are selecting a step-over frame, ensure that the standover height listed is less than your inseam size.

 

    When in doubt, pick the smaller frame. You can always raise the seat up higher.

    If you need help with this, feel free to send us a note.
    Coral Pearl
    26x4 Fat Wheels (great on snow | sand | gravel)

    What wheels should I choose?

    ×

    Wheel Diameter (Height):

    • 20" / 24" - These wheels offer a lower stance for our shorter customers to allow a more comfortable fit and ride.
    • 26" - A great choice for most riders offering a more traditional look.
    • 27" / 29” - Our tallest tire options for our tallest customers. 

    Tire Width:

    • 52c / 2.125" / 2.2" (MTB) - These tires offer the lowest rolling resistance and best mimic a "Traditional" tire size. They are great for paved trails and commuting, but are not suggested for loose terrain.
    • 3" (MTB+) - A versatile choice for riders who want great performance on both trails and commutes (recommended for ice/gravel).
    • 4" - Fat tires offer great All-Season performance with a focus on stability (recommended for Snow/Sand).
    • 4.8" - The widest tire we offer. Great for off-road and backwood adventures. These tires have lots of tread for extra "bite", extra cushion for riding on rough ground, and added stability while riding on softer terrain (recommended for all-terrain).

    Tread Style:

    • Street Tires - Great for commuting or riding paved paths. Has less rolling resistance than MTB tires.
    • MTB Tires - Great versatility for on or off-road riding. These tires have more rolling resistance but much greater traction.
    $3,699.00
    Estimated to be shipped in 6-7 business days

    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.

    ULTRA POWERFUL. ULTRA LOADED.

    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, range, 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

    Drivetrain

    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!

    Technical Specifications

    Size & Fittings

    16" Step-Thru 17" Step-Over 18" Step-Thru 19" Step-Over

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    Customer Reviews

    Based on 41 reviews
    83%
    (34)
    17%
    (7)
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    L
    Linda Smith
    Gray Hair Lady and a Juggernaut

    More fun than I have had in a very long time. I am not a very adventurous person but a good friend convinced me to get one. LOVE IT. Every time I venture out I get braver. Highly recommend.

    R
    Raymond Schiller
    Duo 3 Step Thru

    Love it

    L
    Laura Robinson
    Love this bike!!!

    I absolutely love this bike! I’m back on the trails after being crippled for 7 years. I feel like my old self! The staff is very helpful too! The coral pink is beautiful. I can’t say enough good things about biktrix!

    O
    Orlando Thompson
    Juggernaut Ultra Duo 3 Step-Thru

    Exceeding every expectations thus far

    R
    Ralph Steiert
    Powerful!!!

    So far, so great!! Love the Bike, love the Power, hate the bell.

    F
    Frank V Africh
    Love my Juggernaut Ultra Duo 3

    The bike looks great, powerful Mid hub drive,

    P
    Patrick Zalatan
    For the kid in you

    Having fun with the duo ultra !! Great bike !!

    L
    Les Myllymaki
    Juggernaut Ultra Due 3 Step-Thru

    Allready 121 km,Excellent buy, great for exercizing , used the throttle for assisted hill climbs ,72 years old , enjoy very much… Display is excellent.. Les M

    K
    Kevin OXAMITNY
    Biktrix Are Awesome!

    We definitely made the right decision after extensive research. There are similar bikes on the market but be wary as some are pretty sketchy operations. Biktrix bikes are high quality - you pay for what you get. Customer service has been great and have gone out of their way to answer general questions and help with a billing issue created by PayPal. Just a warning - if you are located in Canada, when purchasing through PayPal make sure your VPN and obfuscation software is off!

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