GreenBike Big Dog Extreme Folding Fat Tire Ebike

2 reviews

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5.0 Based on 2 Reviews
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    Big Dog Fun

    Man, I'm digging my new Extreme Big Dog. This dog is the pitbull of ebikes. It's got tons of power, super fun to ride. Shaka bra.

    Brody G.
    Really Good Ebikes

    Thanks Brody, you def have a way with words.


    Great Fat Folder

    I really love my new ebike. It’s really a blast to ride and the battery lasts for hours. Thanks.

    David B.
    Mexico Mexico

    Hydraulic Disc Brakes - High-Torque 750W Rear Hub Motor - Pedal Assist & Thumb Throttle - Long-Range Battery

    GreenBike Big Dog Extreme Ebike Description

    If you're looking for an affordable fat folding ebike with full suspension, the Big Dog Extreme might be the perfect fit. it's got tons of power, premium components throughout, and an incredible build quality. Check it out.

    Big Dog Ebike Specifications

    • Model Year: 2021
    • Use Case: Urban Jungles, Remote Trails, Sunny Beaches
    • Frame: 6061 Aluminum Alloy Foldable Full-Suspension Frame w/ Adjustable Stem Height
    • Fork: Mozo USA Suspension Fork w/ 140mm Travel
    • Motor: 750W High-Torque Rear Hub Geared Motor by 8Fun (a Bafang brand)
    • Drive Modes: Speed (Cadence) Sensor Pedal Assist System w/ 5 Levels of Assist, Right-Side Class 2 Thumb Throttle, 6-Speed Shimano Gearing
    • Removable Battery: Easy-Access 48V/15Ah Li-Ion Battery w/ Boston Power Cells (for estimate range per charge, please refer to our Ebike Range Calculator)
    • Charge Time: 5-6 Hours
    • Brakes: Green Bike Electric Motion Hydraulic Disc Brakes w/ 160mm Rotors 
    • Tires: 20" x 4" Fat Tires by Innova
    • Seat Post: Suspension Seat Post w/ 27.2mm Travel
    • Display: LCD-5900 Ebike Intelligent Display w/ Battery Level, Speed, Assist Level, Odometer and Trip Distance Readouts
    • Weight Capacity: 300 lbs
    • Folded Dimensions: 45" x 39" x 24"
    • Crank: 170mm w/ 28-33-42T
    • Bike Weight w/ Battery: 61 lbs
    • Warranty: 1 Year
    • Lights: Battery Operated Front and Rear LED Lights

    Here's a video of the ebike being unpacked and assembled. Super easy.

    Here's a video showing how to fold and unfold your electric folding ebike. Awesome.

    Here's a video showing how to get set for a perfect ebike ride. Be safe out there.


    • Orders for in-stock items take 24-48 hours to process, then about 3-7 days in transit. If an item is on backorder, the estimated ship date is show below the Pre-Order Button.
    • All products are shipped free within the Continental US via UPS, FedEx (or similar carrier).
    • If your package appears damaged from shipping, please do not accept it. Tell the driver to keep the package and contact us immediately at 888-883-3350.
    • Returns for buyer’s remorse are typically not accepted by our suppliers, and if accepted, the customer may incur shipping and restocking fees.
    • Please click here to read our entire Shipping & Returns Policy.


    Ask a Question
    • Hi I just bought a Big Dog extreme from your store, I am 6'4" and need a longer seat post. My knees are really close to the handle bars as well... I have the handle bars as high as they will go... Do you have any suggestions? Ted.

      Thank you for your recent purchase. There are a number of long seat posts that can fit the Extreme, just make sure to select the 30.4mm diameter post. Here is an example of a product that would fit:

    • What is the step over height