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Jupiter Bike DEFIANT Foldable Fat Tire Electric Bike 48V 750W 10.4Ah

Jupiter Bike DEFIANT Foldable Fat Tire Electric Bike 48V 750W 10.4Ah

Regular price $1,699.00
Regular price Sale price $1,699.00
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48 volts matched with a 1130 watt (peak) 750 watt (sustained) motor delivers more power when you need it. Instant torque for uphill, sand, snow, or any high performance need.


The all terrain fat tires on the Defiant are designed to easily roll over any terrain. Grip sand, snow, or any terrain with 4" fat tires.


Ride all day with the Defiant electric fat tire bike's impressive 40+ mile range. Go even farther, quick swap the battery to double your range.

Defiant Fat Tire Electric Bike

Defiant Key Features

High end materials and attention to detail makes the Defiant a step above the rest for appearance, reliability, and comfort. On the trail or on the road, the Defiant handles it all beautifully.

All-Terrain Fat Tire

The Defiant's 4" x 20" all-terrain fat tire powers through snow, sand, mud, or whatever your trail throws at you. Sturdy knobs on wheels are perfect for both on and off-road riding. Brand may vary.

All-Terrain Fat Tire

Concealed Removable Battery

Charge things up when you're on the go. The Defiant features a removable battery hidden in the center frame that locks with a key. Keep it safely stored, or take it out and recharge, worry-free.

Concealed Removable Battery

Twist Throttle Grip

Get power on-demand with the variable speed twist throttle grip. High torque power is available on demand! Press the button under the left grip for loud electric horn.

Twist Throttle Grip

Bright 5 Speed Display

Easy to read even in full daylight, the Defiant's LCD display shows you your speed, distance traveled, pedal assist level, and battery life all in a clean design. Choose between 5 levels of Pedal Assist.

Bright 5 Speed Display

4 Bulb LED Headlight

Bright adjustable front headlight for low light conditions. Powered from the Defiants's main Lithium Ion battery, improves visibility & safety.

4 Bulb LED Headlight

7 Speed Shimano Derailleur

The Defiant features the 7 Speed Shimano Tourney Derailleur for manually pedaling your bike. Use the 7 Speed Thumb Shift Lever to rapidly shift between the gears on the rear cassette.

7 Speed Shimano Derailleur

Quick Release Front Wheel

Quickly detach the front wheel for quick storage and transportation options.

Quick Release Front Wheel

Front and Rear Disc Brakes

Superior performance and smooth stopping power. The Defiant's dual 160mm stainless steel disc brakes provide even, reliable braking.

Front and Rear Disc Brakes

Dual Spring Saddle with Light

Dual spring suspension, mesh top, middle opening for breathability, and a bright red LED taillight with 3 modes. The Defiant comes stock with the amazing JupiterBike Upgrade Seat.

Dual Spring Saddle with Light

1130 Watt (Peak) 750 Watt (Sustained) High Torque Motor

Dominate any terrain and climb hills effortlessly with this ultra powerful geared hub motor. A major boost to the enjoyment of your ride.

Quick Release Front Wheel

Front & Rear Fender Mudguards

Fenders make a huge difference when you are riding on roads that are wet from drizzle, recent rain, or snowmelt.
*Fenders not included on refurbished Defiant bikes.

Dual Spring Saddle with Light

Rear Cargo Rack*

Take your cargo with you with the Defiant Rear Cargo Rack. Built tough from aluminum alloy and mounted directly to the Defiant frame. A must have for any commuter. *Optional accessory.

Rear Cargo Rack


Folds down for travel

Easy to Remove Battery

Aluminum light frame

7-speed Shimano Drivetrain

750 Watt Hub Motor

Integrated headlight

Travel up to 40 miles on a charge


Max Speed  20mph / adjustable to 28mph
Range: up  to 40 miles per charge
Motor: 750 Watt Hub Motor
Battery: 48V 10.4Ah Li-Ion
Brakes: Front and Rear Disc
Wheels: 20" x 4" Fat Tire
Folded (L x W x H): 38" x 22" 28"
Unfolded: (L x W x H): 65" x 22.5" x 48"
Product Weight: 55 lbs.
Weight Limit: 300 lbs.
Wheel Base: 42" (front to rear axle)
Cross Bar Height (step over) 29 inch




Customer Reviews

Based on 37 reviews
Ken Konash
Best purchase in years.

I bought a Defiant about a month ago after looking over the many e-bikes on line. I was able to ride the Defiant in Florida about a year ago and just loved it, but I wanted a Camo Color. When I saw that they made this in Camo, I just bought it (on sale). The bike arrived in 5 days from purchase. It took me about 45 minutes to read the whole manual and assemble the bike (which was really easy). I live in the West at 6100' elevation and the peddle assist really helps me enjoy the outdoors. I have put on over 100 miles so far and it is running perfect. It rides really smooth and extremely comfortable. Everything about the bike is easy. The charging is supper simple. I get a lot of compliments on the bike where ever I ride. I already gave away my old mountain bike.


After many hours of research, the Defiant seemed to be the best option of price, features, and very important....the weight! I have mobility issues that make walking any distance (let alone lifting anything) quite difficult. My Defiant gave me a part of my life I sorely missed. Could barely hold back the tears on my test ride. It's totally bad ass! My black beauty is very sexy and really moves in the sand, gravel, dirt, grass, and on the hardtop! I had the opportunity to visit JupiterBike in Tampa while I wintered in Florida. Their customer service was awesome! All I can say is their...CUSTOMER SERVICE IS THE BOMB! She was so helpful! She got all the paperwork together and had it put together for me too!!! Nothing but good things to say! The seat is nice!! I also got the upgraded suspension seat post! Anyway I could go on about the great battery life, great shifter, easy read screen, assist levels, and everything else, but you'll find out when you get yours!

T Bridges
Unreal Customer Support & Product

Received my JupiterBike Defiant in 3 days! Bike is all and more of what I had searched for and more! Built like a tank! Customer Service 100% Happy Camper! Thank you Rob!! The E-Bike is way too fast for me, but may have the need for speed to keep up with the kids. Lol. Btw, speed control is adjustable for your safety. I am 345 lbs. Pulls me just fine. Just need a wider seat for bigger chops. Lol The actual seat that comes with it is fantastic for small butted people. I'm 5'5" and the center bar is just perfect to get on or off the bike. Just ordered the cool rear cargo rack to go with it. Oh btw, order the safety chain lock, its awesome! It rides great, but I don't intend to be in a bumpy yard or riding rough trails. So the smoothness of the ride will be fantastic in RV parks and trails. Did many nights and days of research to find the perfect E-Bike for the money and product reviews. This is it"...The Jupiter Defiant". Seriously, thinking 🤔 about buying another Defiant E-Bike for my roommate next week. Kind-a waiting on a discount to come about on the second one. Just hoping 🙏 Very Satisfied Customer!! Thank you for your customer service! Ask for Rob! He's "the man"!!! JupiterBike Company Location: Tampa, FL USA

john reese
I love the bike but

The bike came pretty quick but it had no tail light.

Defiant Review

After a little over a year my review of the Defiant... I have spent more time on my bike that I ever have, it brought the fun back to biking. With a few very minor tweaks it became even more solid: - Kinect Seat-Post for an even smoother ride - Snow Air Fork - Brooks Seat You can go a pretty good distance on level 1, approximately 30 to 40 miles depending on the terrain. Overall, I highly recommend this VERY SOLID bike and I would definitely buy again. Pound for pound a bargain.