Is the Defiant good for a daily commute?

Yes, if your route is short to moderate and you have somewhere to store it folded. The upright position, fenders-ready frame and 20 mph assist suit city riding, but the 55 lb weight makes stairs and crowded transit stops a chore.

How does it handle snow and sand?

The 20-inch fat tires and 750W motor are the reason to pick it over a standard folding e-bike. Riders report it floats over loose sand and packed snow, though traction still depends on tire pressure and tread.

What is the real-world range?

Jupiter Bike claims 40+ miles, but expect less with heavy throttle use, cold weather or a loaded rider. Pedaling in lower assist levels gets closest to the claim, and owners say range fades after about three years.

Can it fit in a car trunk?

It folds to 38 x 22 x 28 inches, compact for a fat-tire bike, but at 55 lbs two people or a careful lift is safer. Measure your trunk before counting on it.

Does it come with fenders and a rack?

It ships with front and rear fender mudguards and the JupiterBike Upgrade Seat; refurbished bikes do not include the fenders. A rear rack is not part of the package, and many riders add one for commuting.

How does it compare with other folding fat-tire e-bikes?

It matches rivals on motor size, wheel size and folding frame, and its 7-speed gearing is a plus. It trails better-known brands on build consistency and support, which is where the lower ratings come from.

Can I carry a spare battery?

Yes. The concealed battery is removable, locks with a key and can be swapped, so a second pack doubles your range on long rides.

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This hour's deals

Jupiter Bike Defiant Fat Tire Folding Electric Bike

−38%

Outdoors · Best Buy

A fat-tire folding e-bike that fits in your trunk

Name: Jupiter Bike Defiant Fat Tire Folding Electric Bike
Brand: Jupiter Bike
Availability: InStock

Jupiter Bike Defiant Fat Tire Folding Electric Bike

Jupiter Bike's Defiant fat-tire folding electric bike for commuters and trail riders who want go-anywhere power.

Deal score 5.7 · Good deal

$999.99$1,600.00 Best Buy's regular price

You save $600.01 at Best Buy

Deal.ai's agents found this deal on November 13. The store may have changed its price since.

Why it's a great deal

Elsewhere right now: Jupiter Electric Bikes $999.00, Urban Bikes Direct $1,599.00 (typical $1,299.00 across 2 stores)
Best Buy lists its regular price at $1,600.00: 38% off by its own figures
Rated 4.7 out of 5 by 33 buyers

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Every store we checked

Jupiter Electric BikesNew
In stock
$999.00Checked 57 min ago
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Best BuyNew
In stock
$999.99Checked 57 min ago
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RenovomotorsNew
In stock
$1,304.10Checked Nov 10
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WalmartNew
In stockSold by Jupiter BikeReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.
$1,499.00Free shippingChecked 1 h ago
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Urban Bikes DirectNew
In stock
$1,599.00Checked 57 min ago
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EpicWheelz.comNew
In stock
$1,599.00Checked 6 h ago
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Electric Surf SportsNew
In stock
$1,599.00Checked 6 h ago
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Venture Out E-BikesNew
In stock
$1,599.00Checked Nov 10
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electriibeNew
In stock
$1,599.00Checked Nov 10
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CampingworldNew
In stock
$1,699.00Checked 57 min ago
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Omaha Sports and Games CompanyNew
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$1,699.00Checked 6 h ago
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The-House.comNew
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$1,699.00Checked 6 h ago
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Camping WorldNew
In stock
$1,699.00Checked 6 h ago
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All Brands ConnectNew
Availability unknown
$1,599.00Checked 12 h ago
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Energy eBikesNew
Availability unknown
$1,699.00Checked Nov 10
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SidelineSwapPre-owned
Out of stock
$526.50Checked Nov 10
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Myrtle Wheels E-BikesNew
Out of stock
$1,599.00Checked 6 h ago
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rideemoto.comNew
Out of stock
$1,599.00Checked 6 h ago
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ElectricBykeNew
Out of stock
$1,699.00Checked Nov 10
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About it

Take on anything with the new Defiant Fat Tire Folding Electric Bike. This bike is designed to tackle snow, mud, sand, or anything else that stands in your way. Don't just ride a trail, dominate it.

From Jupiter Electric Bikes

750W sustained (1130W peak) geared hub motor for climbing hills and power on demand
4" x 20" all-terrain fat tires roll over sand, snow, mud and rough trails
Folds down for travel and storage; folded size 38" x 22" x 28"
Concealed removable battery locks with a key and can be swapped to double range
5-speed LCD display shows speed, distance, pedal assist level and battery life
7-speed Shimano Tourney derailleur with thumb shift lever for manual pedaling

Materials: Aluminum alloy rear cargo rack; dual 160mm stainless steel disc brakes; mesh-top dual spring saddle
Fit: Weight limit 300 lbs; cross bar height (step over) 29 inch; wheel base 42"
Sizing: Fits riders up to 300 lbs; 55 lbs product weight; step-over height 29 inch
Guarantee: 3 Year Limited warranty
In the box: Defiant bike with stock JupiterBike Upgrade Seat, Front and rear fender mudguards (not included on refurbished bikes)

What buyers say

Buyers like

Folds up and fits inside RV storage compartments
Handles pavement, gravel, grass, dirt, sand and snow with ease
Easy, intuitive assembly out of the box
Long range: easily 40 miles on a full charge with pedal assist
Virtually maintenance-free for years aside from tubes, tires and tune-ups
Top-notch customer support, including help with battery replacement

Buyers complain about

Tires started losing air one by one with no punctures
Throttle cables broke and the horn stopped working
Company sent replacement cables that had nothing to do with the bike
Controller user manual was not up to date
Battery range dwindles after about 3 years of use
Poor quality and poor customer service reported by one buyer

Specs

Number Of Speeds: 7
Drivetrain Type: No drivetrain
Suspension Type: Front suspension
Intended Use: Commuting
Usage Terrain: Snow, Sand, Trails
Brake Type: Disc
Wheel Size: 20"
Wheel Type: Fat Tire
Frame Material: Aluminum
Frame Type: Folding

About the Jupiter Bike Defiant Fat Tire Folding Electric Bike

The Defiant is a folding aluminum fat-tire e-bike with a 750W rear hub motor, a 48V 10.4Ah battery and 20-inch fat tires. It folds for storage and transport, has front suspension, disc brakes and a 7-speed Shimano Tourney drivetrain, and it is built for snow, sand and rough trails as well as commuting. Its 55 lb weight and 20 mph top speed put it in line with other folding fat-tire e-bikes, but owners report mixed reliability and support experiences. It suits riders who need one bike for a small apartment, a car trunk and unpaved paths, and who can handle the weight when folded.

Best forRiders with limited storage spaceCommuters mixing bike and car or transitSnow, sand and gravel path ridingRV owners storing a bike in a compartment

Pros

Folds down for apartments, trunks and closets
750W motor moves a heavy rider and fat tires well
20-inch fat tires handle snow, sand and rough trails
Front suspension and disc brakes on both wheels
7-speed gearing lets you pedal with or without assist

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