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Deal.ai › Jupiter › E-Mountainbikes
Jupiter
Jupiter Defiant ST Fat Tire Folding Electric Bike

Jupiter Defiant ST Fat Tire Folding Electric Bike

Best price now

$1,799.00at CampingworldChecked 13 h ago

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Lowest price today: $1,799.00 at Campingworld (checked Nov 11, 2026).
  • Checked at 2 stores.

Our take on the Jupiter Defiant ST Fat Tire Folding Electric Bike

The Jupiter Defiant ST is a folding fat-tire electric bike with a step-through frame, front and rear shocks, and 20-inch tires that are 4 inches wide. A 750W geared hub motor peaks at 1130W, and the 48V 13.2Ah battery is built into the frame and locks with a key. It ships with a rear rack, full fenders and a sprung saddle, so it is ready for commuting and errands. It suits riders who want one bike for pavement, gravel, snow and sand and who need to fold it for a car trunk or small apartment. Against rigid folding e-bikes it trades some weight and pedaling efficiency for comfort and grip on loose ground.

Best forRiders mixing pavement, gravel and beach or snow pathsCommuters who fold the bike for a car trunk or elevatorShorter or less flexible riders who want a step-through frameCampers and RV owners with limited storage
Pros
  • Fat 4-inch tires float over sand, snow and mud
  • Front and rear suspension smooth rough surfaces
  • Step-through frame makes mounting easy
  • Battery is concealed, removable and key-locked
  • Comes with rack, fenders and comfort saddle
  • Folds for storage and transport
Cons
  • Heavy for lifting into a trunk or up stairs
  • Fat tires and suspension add drag and weight on pavement
  • 750W hub motor is not a mid-drive, so climbing is less refined
  • Folding hinge is one more part to check and maintain

Jupiter Defiant ST Fat Tire Folding Electric Bike prices at every store

  • CampingworldNew

    In stock

    $1,799.00Checked 13 h ago
    Visit Campingworld
  • Best BuyNew

    Out of stock

    $1,999.00Free shippingChecked Nov 9
    Visit Best Buy

Store links may earn us a commission. Some prices via Klarna.

Jupiter Defiant ST Fat Tire Folding Electric Bike price history

$1,799.00$1,799.00
Nov 9Nov 11

Lowest price we've seen: $1,799.00 on Nov 9 at Campingworld. Tracked across 2 stores since Nov 9.

From Campingworld

  • Step-through frame for easy mounting and dismounting
  • Dual shocks front and rear for comfort on rough terrain
  • 4" x 20" all-terrain fat tires for snow, sand and mud
  • Concealed removable 48V 13.2Ah lithium-ion battery locks with a key
  • Bright 5-speed LCD display shows speed, distance, pedal assist level and battery life
  • 1130W peak (750W sustained) geared hub motor
Sizes
20"
Materials
Leather grips; dual spring comfort saddle with mesh top
Fit
Step-through frame; folded 38"L x 22"W x 28"H, unfolded 65"L x 22.5"W x 48"H; weight 55 lbs; weight limit 300 lbs; wheelbase 42"; crossbar height 29"
Returns
Most unused items may be returned for a refund or exchange, minus shipping, within 90 days of purchase; bikes are returnable within 30 days if unopened and unus
Shipping
FREE shipping; ships from vendor; not available to Canada, Alaska or Hawaii.
In the box
MIK compatible rear rack, Full city fenders, Dual spring comfort saddle

About the Jupiter Defiant ST Fat Tire Folding Electric Bike

The Jupiter Defiant ST is a folding electric bike with a step-through frame, which makes it easier to mount and dismount. It has dual shocks, front and rear, for comfort on rough terrain. The 4" x 20" all-terrain fat tires are made for snow, sand and mud.

A geared hub motor delivers 1130W peak power and 750W sustained. The 48V 13.2Ah lithium-ion battery is concealed in the frame, can be removed, and locks with a key. The LCD display shows speed, distance, pedal assist level and battery life.

The bike has leather grips and a dual spring comfort saddle with a mesh top. It comes with a MIK compatible rear rack and full city fenders.

Color
White
Frame
Step-through, folding
Wheel size
20" with 4" wide fat tires
Motor
1130W peak, 750W sustained, geared hub
Battery
48V 13.2Ah lithium-ion, removable, key lock
Dimensions
Unfolded 65"L x 22.5"W x 48"H; folded 38"L x 22"W x 28"H
Weight
55 lbs
Weight limit
300 lbs
Wheelbase
42"
In the box
MIK compatible rear rack, full city fenders, dual spring comfort saddle

Specifications

Color
WhiteSource

Questions and answers

How fast does the Defiant ST go?
The 750W sustained motor is a Class 2/3-style setup, so expect pedal-assist up to around 20 mph and a throttle where fitted. Real speed drops on steep climbs and soft sand.
How far can it go on a charge?
The 48V 13.2Ah battery is about 634Wh. Expect roughly 20 to 40 miles depending on assist level, rider weight and terrain; fat tires and throttle use cut range.
Can it fit in a car trunk?
Yes, the frame folds at a central hinge. It is still a bulky, heavy package, so a hatchback or SUV is easier than a sedan trunk.
Is it good for snow and sand?
That is its main strength. The 4-inch tires and dual suspension handle loose surfaces better than narrow-tire e-bikes, though deep sand still demands effort.
What comes in the box?
The bike, a MIK-compatible rear rack, full city fenders and a dual-spring comfort saddle. Battery and charger are included.
Does it suit tall riders?
The step-through frame and 20-inch wheels favor average and shorter riders. Very tall riders should check the seat and handlebar height before buying.
Where is the Jupiter Defiant ST Fat Tire Folding Electric Bike cheapest?
At Campingworld, for $1,799.00, as of our latest check.
Where can I buy the Jupiter Defiant ST Fat Tire Folding Electric Bike?
2 stores we checked sell it, including Campingworld, Best Buy.

Stores we've priced the Jupiter Defiant ST Fat Tire Folding Electric Bike at

  • Best Buy deals and prices

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