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Jupiter Bike Defiant Fat Tire Electric Bike Black

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More Power:

48 volts matched with a 750 watt (peak) 500 watt (sustained) motor delivers more power when you need it. Instant torque for uphill, sand, snow, or any high performance need.

Offroad Ready:

The extra large wheels on the Atlas are designed to easily roll over any terrain. Grip sand, snow, or any terrain with fat 27" x 3" tires.

Go Farther:

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

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.

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.

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.

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.

4 Bulb LED Headlight:

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

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.

Quick Release Front Wheel:

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

Front and Rear Disc Brakes:

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

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.

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.

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. *Rear Cargo Rack is an optional accessory sold separately.

Max Speed: 20mph/ adjustable to 28 mph

Distance per Charge: Up to 40 miles

Motor: 750 Watt Hub Motor

Battery: 48V, 10.4Ah Lithium-Ion

Brakes: Front and Rear Disc

Wheels: 20” X 4” Fat Tire 

Folded (LXWXH): 38” X 22” X 28”

Unfolded (LXWXH): 65” X 22.5” X 48” 

Product Weight: 55 LBS

Weight Limit: 300 LBS

Cross Bar Height (Step Over): 29”

Warranty: 1 Year Limited


  • Product Name: Jupiter Bike Defiant Fat Tire Electric Bike Black
  • Shop by Brand: Jupiter Bike
  • Color: Black
  • Battery: 48V 10.4Ah LI-ion
  • Description:

    More Power:

    48 volts matched with a 750 watt (peak) 500 watt (sustained) motor delivers more power when you need it. Instant torque for uphill, sand, snow, or any high performance need.

    Offroad Ready:

    The extra large wheels on the Atlas are designed to easily roll over any terrain. Grip sand, snow, or any terrain with fat 27" x 3" tires.

    Go Farther:

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

    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.

    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.

    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.

    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.

    4 Bulb LED Headlight:

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

    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.

    Quick Release Front Wheel:

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

    Front and Rear Disc Brakes:

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

    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.

    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.

    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. *Rear Cargo Rack is an optional accessory sold separately.

    Max Speed: 20mph/ adjustable to 28 mph

    Distance per Charge: Up to 40 miles

    Motor: 750 Watt Hub Motor

    Battery: 48V, 10.4Ah Lithium-Ion

    Brakes: Front and Rear Disc

    Wheels: 20” X 4” Fat Tire 

    Folded (LXWXH): 38” X 22” X 28”

    Unfolded (LXWXH): 65” X 22.5” X 48” 

    Product Weight: 55 LBS

    Weight Limit: 300 LBS

    Cross Bar Height (Step Over): 29”

    Warranty: 1 Year Limited


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Alpha E-Bikes
Alpha E-Bikes

We are the primary distributor for Jupiter fold up E bikes. These bikes are top of the line products that have been growing tremendously in the Boating and RV world.

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