📦 *FREE SHIPPING ON ALL eBIKE ORDERS$1000 Minimum Order Value

Find A Dealer
1000W Mid-Drive

Motor Power

160Nm of Torque

Extreme Hills

52V 17Ah 910Wh

est. 45mi/70km Range

265lb

Load Capacity

+5'8ft

Rider Height

Cadence + Torque Sensor

Smooth & Powerful Pedal Assist

Juggernaut Ultra FS Pro

M 17" [2 weeks Shipping time]

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.
    Matte Black
    26X4 FAT

    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.
    Save $200
    $4,099.00 $4,299.00
    Estimated to be shipped in 6-7 business days

    Juggernaut Ultra FS pro

    Top-of-the-line components and the most powerful torque sensored mid-drive motor in the industry make the Juggernaut Ultra FS eBike the best-built full-suspension electric bike available.

    Product features

    Bafang M620 Ultra 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. This allows you to span cities, climb hills, and explore all the places you want to go with ease.

    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.

    Removable Lithium-Ion Battery

    Our removable battery system offers unmatched convenience for re-charging. With the twist of a key, your battery can be brought inside and set to charge.

    11-Speed Drivetrain

    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.

    26" x 4.0" Fat Tires

    Whether you're up against sand, mud or snow, these tires will handle it with ease. The Juggernaut Ultra FS Pro is ready for all-season, all-terrain riding.

    Colour 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.

    Front Light

    Light the path with the front light powered by the bike's battery. It can be turned on/off on the handlebar control pad. The light is upgradable to the Biktrix Armageddon 2000 lumen light

    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.

    Technical Specifications

    Size & Fittings

    17" Boost 17" Fat 18.5" Boost 18.5" Fat Tire

    Need A Hand?

    Chat With Us
    We are always excited to hear from you. Just click the button below to activate chat now.
    Chat Now
    Book A Virtual Demo
    Our eBike specialists can help you find your dream eBike and answer any questions you may have.
    Book An Appointment Now
    Give Us A Ring
    24/7 e-mail support. 8/5 phone and live chat with eBike Specialists to help you in anyway.
    +1-866-BIKTRIX

    Customer Reviews

    Based on 220 reviews
    90%
    (199)
    4%
    (8)
    3%
    (7)
    1%
    (2)
    2%
    (4)
    J
    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 .

    User picture
    K
    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

    M
    Michael Dascanio
    Great bike!!

    The bikers excellent to ride handles very well, but very heavy. It is very powerful and get you where you need to go or use her every day to go to work and back home.

    User picture
    C
    Carlos Almeida

    Juggernaut Ultra FS Pro 3

    T
    Tony Sottile
    Great bike!!

    I love this bike. very powerful and fun to ride. highly recommend this bike. the full suspension if smooth.

    J
    Jack Stinson
    FS Pro

    I love it!

    C
    CHRISTOPHER SMITH
    Satisfied customer

    Great customer service

    F
    Francois Gravel
    Fantastique

    WoW!!! Extremely happy.

    D
    Denis Dupuis
    Super bon vélo de qualité

    Mes premières impressions sur Biktrix, et bien j'ai reçu mon vélo FS-Pro2 en deux semaines, assemblages rapides, et faciles pour ce qui restait à faire. Beaucoup de vidéos et documentations, pour un anglophone c’est merveilleux, mais pour un francophone heureusement, on peut tout traduire ou presque aujourd’hui… Alors on se débrouille, j’ai donc réussi à tout comprendre. Tout ce que je trouve qui manque avec l’envoi, c’est une liste des composantes par vélo, ça permet rapidement de trouver des pièces de rechanges locaux au besoin ou d’avoir plus de pièces en lignes.
    je n’ai rien èa dire, j’ai écrit (en traduction) et j’ai rapidement reçu du support pour commander un kit de disque de feins, et même si nos deux provinces son assez éloignée, j’ai reçu ça de façon rapide en quelques jours avec un suivi de ma livraison. Je suis technicien concepteur mécanique de 30 ans d’expérience, j’ai aussi été responsable de la qualité dans mon entreprise. Je peux affirmer que c’est pas juste un beau vélo, mais aussi avec une qualité soignée, je ne suis pas un grand expérimenter des vélos, mais des motos oui et tout ce qui ce conduit hors route, la qualité et la… et le choix des composantes aussi, on doit apprendre à conduire c’est bête Ultra… le seul problème, le moteur est puissant… c’est pas vraiment un problème
    PS : Le siège confort, je le recommande deux batteries c’est pesant, mais ça donne de l’autonomie leur choix d’accessoires sont tous de qualité pour avoir équipé nos vélos…
    Note : le jeu de roues supplémentaires de 27,5 po, il devrait y avoir une option pour la casette et le disque de frein en supplément à choisir, car dans mon cas, ils serviront en mode Streets, avec des pneus plus moins larges sans crampons, pneu pour piste cyclable, et augmenter l'autonomie, alors je veux faire l’échange rapidement selon mon parcours.
    J’adore mon FS- pro2… je le recommande,

    123

    Choose the ID of the Quiz you want to render (automatic popup):

    • Help Me Choose A Bike - Backup with ID: wnHnBB
    • Help Me Choose A Bike with ID: GrHgeZ