GreenBike Big Dog Off-Road 750W Fat Tire Electric Bike

8 reviews

FREE Shipping to US Lower 48
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Full Suspension Fat Tire Folding Off-Road Monster

Hydraulic Disc Brakes w/ Auto Motor Cutoffs

Robust 48V Electrical System w/ Long-Range 15Ah Battery

Right-Side Thumb Throttle & 5-Level Pedal Assist System (PAS)

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Big Dog Off-Road Description

Are you looking for an incredibly powerful folding electric bike? Do you want the best quality components and the longest lasting battery? Well, Imagine cruising around town on this baby!

The GreenBike Big Dog Off Road is the monster truck of off-road foldable ebikes. Weighing in at 61 pounds, the GreenBike Big Dog Off Road is packed with high-end features normally found on much more expensive ebikes.

It's a powerful, sleek, and a comfortable ride, with top quality components that will last for years. Use it for commuting, exercise, or to just take a leisurely ride on this comfy e-bike.

The 6061 aluminum alloy frame, 750W electric motor, 48V/15Ah battery, and 6-speed Shimano gears are only some of the great features that come standard on the Green Bike Big Dog Off-Road.

Big Dog Off-Road Specifications

  • Motor: 750W Nominal (1200W Peak) 8Fun (Bafang Brand) Rear-Mounted Geared Hub w/ 80 Nm of Torque
  • Battery: Easy-Access 48V/15Ah Battery Pack w/ Boston Power USA Cells
  • Range: 25-50 Miles on 5-6 Hour Charge
  • Top Speed: 28 mph
  • Gearing Details: Shimano 7-Speed Derailleur
  • Brakes: Hydraulic Disc Brakes w/ Motor Cut-Off and 160mm Rotors
  • Tires: Innova 20″ x 4.0″
  • Frame Material: 6061 Aluminum Alloy
  • Fork: Mozo USA Suspension with 140 mm Travel, Hydraulic Lockout
  • Stem: Adjustable Height
  • Saddle: Wide Saddle with Back Light
  • Stem/Handlebar: Tool-Free Adjustable
  • Display Type: LCD-S900 E-bike Intelligent Display
  • Readouts: Battery Level, Speed, Assist Level, Odometer, Trip Distance
  • Drive Modes: Cadence Sensing Pedal Assist, Thumb Throttle
  • Suspension: Dual suspension, front 140 mm travel Mozo USA and rear Taiwan kindshock A5 RE
  • Minimum Seat Height: 33"
  • Step Over Height: 25"
  • Recommended Rider Height: 5'-2"+
  • Folded Dimensions: (L x W x H) 37" x 29" x 39"
  • Total Weight: 61 Lbs.
  • Max Load Capacity: 300 Lbs.
  • Box Dimensions & Weight: 40" x 19" x 33" (88 Lbs.)
  • Warranty: One year
  • Assembly: The Big Dog Off-Road comes mostly assembled. Final assembly includes attachment of the Seat Post and Handlebar. Please see the assembly video below.
  • Tools Required: 6mm Allen Wrench (Included)
  • Shipping: Free shipping to the lower 48. We are unable to ship this brand to Alaska, Hawaii or Canada at this time.

Directions to Unlocking the Big Dog Off-Road Speed Limit

  • Make sure the display is off
  • Hold both breaks and throttle all the way down
  • Using another finger (while still holding) turn on the display by pressing down the M button
  • After the display turns on, keep holding the breaks and throttle for 16 seconds
  • After 16 seconds, let go
  • After letting go change the pedal assist level to 5 and pedal
  • If you see that the speed gets to around 27-28 mph, it is unlocked
  • Repeat steps if it doesn’t work 

Brent McCluskey Electrified Review

Independent ebike reviewer and friend Brent McCluskey reviews the GreenBike Big Dog Off-Road fat tire folding electric bike. He says that this ebike feels like a good choice for those who need the power, range and comfort of a full size electric bike, but don’t quite have the space to store a full size bike.

The Big Dog Off Road is a compact frame, but because of the geometry and specifically the handlebars, it feels more like riding a full size electric bike. Also, this will be a good choice for those who plan to carry extra cargo, and/or have steep hills in their area. As far as folders go, the Big Dog Off Road is one of the most powerful, and has one of the biggest batteries around.

Please note that Brent mistakenly referred to this model as the Big Dog Extreme, which is similar to the Big Dog Off-Road, except that it does not have rear suspension).

GreenBike Unboxing Video

Watch the video below to see how to unbox your new Green Bike ebike.

Orders for in-stock items take 24-48 hours to process, then about 5-7 days in transit. Delays due to Covid have occurred. If an item is on backorder, the estimated ship date will be shown below the Pre-Order Button.

All products are shipped free within the Contiguous US via UPS, FedEx or similar carrier. Shipping to AK, HI and PR may incur additional charges.

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. We offerGuide Package Protectionto ensure against lost, stolen or damaged goods. Click here to learn more about Guide.

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
  • Does this bike have a quick release front wheel? Also, is it good for someone who is 5'2"? Many thanks! Loving the looks and specs of this bike.

    The GreenBike Big Dog Off-Road does not come with a quick-release front wheel. It is recommended for persons 5'-2"+.

Customer Reviews
4.8 Based on 8 Reviews
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    Love the bike but needs better instructions

    I got my Big Dog off-road bike in about a week from ordering. CA to NC in a week…not bad! Basically there are no assembly instructions with the bike so you’re kind of on your own. It took a skinned up knee due to hitting the handle bar before I realized I should have mounted the stem 180 degrees from the way it came from the factory. Turned it around and problem solved! Here’s a real and potentially dangerous gotcha: The instructions talk about “6 km mode” on page 7. What they don’t explain is that if you activate this mode, your bike is going to take off at 6 km/hr and probably crash into something! In my case, it was my garage wall which resulted in a broken headlight/horn wire which took a couple of hours to repair. A longer seat post would be nice as my legs feel really bound up at the top of the pedal stroke. I’m not abnormally tall, 5’10”. I’d hate to see someone over 6’ tall try to pedal this bike! Also, the tires that come on it are made for street riding, not off road travel. If you’re going to call something a “Big Dog Off Road” put some sort of off road tires on it! Tires can be replaced easily enough but at $1999 you shouldn’t have to spend more money to make it what it says it is in the first place! In fairness to the tires, I haven’t tried them off-road yet but I can’t see them being effective in any kind of slick or muddy conditions. On the plus side, I love the powerful 750 watt motor and large capacity battery! Plenty of power and a comfortable ride with the full suspension. The hydraulic brakes work great as well as the smooth shifting Shimano gear set. Overall, I’m pleased with my purchase and the service I received from RGE! With some attention to details this would have been a 5 star review but due to the above mentioned issues I can only go with 4.

    Joe P.
    United States United States

    Why buy anywhere else?

    This purchase could have gone very bad. I ordered two Greenbike Big Dog Off Roads. The transaction was flawless and the bikes were shipped less than 24 hours later. I received my tracking info and was very anxious. Unfortunately Fed Ex dropped the ball and the bikes went missing for two weeks. Steve jumped on it and had them tracked in literally minutes. Not only did I save 5% on the bikes, I had another ally in my court should something go wrong. Which in this case, proved to be a great thing. The bikes are unbelievably awesome and quite the head turners. Why buy anywhere else?

    Scott S.
    United States United States

    Full Suspension Fat Folder Runs Great

    I've been riding my new Big Dog Off Road for about a month now, and I'm loving it. It climbs hills with lots of power, and the full suspension frame really helps to absorb the bumps on rutted trails. For under $2k, I think this is a really good ebike.

    Pete G.
    United States United States

    Really Good Ebikes

    Great. Thanks Pete.


    Great service fun bikes

    Steve is absolutely the best at customer service. We bought two bikes and so far they have been fun to ride with plenty of power. Would definitely recommend both Steve and the Big Dog Off Road bike.

    United States United States

    Really Good Ebikes

    Thank you for the great review and the recommendation.


    Very Powerful and Long Range

    I am very pleased with my new ebike. I like all the features it comes with, like the very powerful motor and long-range battery. It is very comfortable to ride, and the full suspension is highly responsive. My only complaint, and the reason that i did not give it a 5-Star rating, was because I had to wait a few weeks before it would ship. I guess it was on backorder because of Covid.

    Paris J.

    Really Good Ebikes

    Thanks for the review. You are correct, due to the coronavirus, the ebike supply chain has been disrupted, and many models are out of stock. I appreciate your patience.