QNUT BK20 Fat Tire Electric Bike Review: Can It Really Go 90 Miles?

A powerful fat-tire e-bike with exceptional 60-90 mile range and a strong 1500W motor at an unbeatable $699 price, perfect for trail adventures and long rides, though it lacks UL certification and premium braking.

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Key Specifications

Motor
1500W Peak

Best For

How this e-bike scores for different riding styles

Off-Road Adventure
88/100

Excellent off-road capabilities with 1500W peak motor, 20x4.0 fat tires, dual suspension, and powerful torque for climbing. The retro motorcycle design and robust frame handle rugged terrain confidently.

Recreational Leisure
85/100

The retro motorcycle styling, comfortable dual suspension, and smooth ride quality make it perfect for casual beach or trail cruising. The fat tires handle sand and varied terrain effortlessly for leisurely exploration.

High Performance
82/100

The 1500W peak motor and 28 mph top speed deliver strong performance, though it falls short of the highest-performance e-bikes that exceed 30-40 mph. The 7-speed gearing provides good versatility for various conditions.

Daily Commuting
78/100

The 60-90 mile range and 28 mph speed make it suitable for commuting, though the 20-inch wheels and fat tires add unnecessary weight and rolling resistance for purely urban use. The removable battery and LCD display are practical commuter features.

Cargo & Utility
45/100

Lacks rear rack and has no mentioned cargo capacity or high weight limit specifications. While the powerful motor could handle loads, the absence of utility-focused features limits cargo hauling potential.

Compact & Portable
25/100

Not foldable and features heavy fat tires with a likely substantial frame weight, making it impractical for storage in apartments or carrying on public transit. The 26-inch frame further limits portability.

Our Verdict

This electric bike packs serious power and range into a budget-friendly package that costs hundreds less than similar bikes. The 1500W motor is really strong and can zoom up to 28 miles per hour, which is fast enough for most riders. The huge battery gives you between 60 and 90 miles on one charge, meaning you could ride for hours without stopping. The fat tires are 4 inches wide, which helps the bike grip the ground on sand, gravel, or even snow. It also has suspension on both the front and back wheels to make bumpy roads feel smoother. The cool retro motorcycle look makes it stand out from boring regular e-bikes.

This bike works best for people who want to ride on trails, beaches, or dirt paths on weekends. The fat tires and strong motor make it perfect for adventure riding where regular skinny-tire bikes would get stuck. It's also good for longer rides to work if you live far away since the battery lasts so long. The battery can be taken off and charged inside your house, which is handy if you live in an apartment. People who like powerful bikes but don't want to spend over a thousand dollars will really like this one.

The bike has some problems you should know about. It doesn't have a UL safety sticker, which means it hasn't been tested as carefully as more expensive bikes. The drum brakes aren't as good as the disc brakes on pricier models, so stopping takes a bit longer. It's also heavy and doesn't fold, so you can't easily carry it upstairs or put it in your car. There aren't many reviews yet, so we don't know how well it holds up after riding it for a year or two. If you need a bike mainly for smooth city streets or want something light and portable, you should probably look at different options. But if you want tons of power and range without spending a fortune, this bike gives you a lot for your money.

What We Like

  • Super powerful 1500W motor with 28 mph speed gets you up steep hills and through tough terrain easily
  • Amazing 60-90 mile range means you can ride all day without worrying about running out of battery
  • Big 48V 18Ah battery (864Wh) gives you tons of power and the battery comes off so you can charge it anywhere
  • Fat 4-inch tires and front and rear suspension soak up bumps and handle sand, snow, and trails like a champ
  • Great price at $699.99 for what you get - most bikes with this much power and range cost way more

What Could Be Better

  • Not UL certified which means it hasn't passed important safety tests that other e-bikes have
  • Drum brakes aren't as strong as disc brakes and don't stop as quickly, especially when going fast downhill
  • Only 9 customer reviews so it's hard to know if the bike holds up over time like more popular models
  • Doesn't fold up so you can't easily store it in small spaces or take it on buses or trains
  • Missing useful extras like a rear rack for bags, cruise control, and phone charging port that nicer bikes have

Standout Features

1500W Peak Motor Power
Exceeds the excellent threshold of 1200W, placing it in the top tier for motor power - most budget e-bikes only have 500-750W motors
864Wh Battery Capacity (48V 18Ah)
Scores 100/100, surpassing the 864Wh excellent benchmark - this is about 70% more capacity than average budget e-bikes with 500Wh batteries
60-90 Mile Maximum Range
Achieves perfect score by exceeding the 80-mile excellent threshold - most e-bikes in this price range only manage 25-40 miles per charge

Full Specifications

Performance

Motor Power1500W Peak
Gears7

Build & Frame

Frame MaterialAluminum
Frame Size26 inches
Brake StyleDrum

Features

Included Features

Fat Tires
Integrated Lights
LCD Display
Pedal Assist
Removable Battery
Suspension
Throttle

Not Included

App Connectivity
Cruise Control
Fenders
Foldable
Rear Rack
UL Certified
USB Charging
Walk Mode

Frequently Asked Questions

Common questions about Electric Bike for Adults-1500W Peak Motorcycle Bicycle,28MPH,48V 18Ah Battery,Max 60-90 Miles Long Range,7 Speed ebike,20''x4.0 Fat Tire Dirt Bicycles,Retro Style e Bikes

How far can this bike go on one battery charge?

The bike can go between 60 and 90 miles on one charge depending on how you ride it. If you pedal along with the motor, you'll get closer to 90 miles. If you just use the throttle without pedaling, it will be closer to 60 miles.

How fast does this electric bike go?

The bike can reach speeds up to 28 miles per hour, which is pretty fast for an e-bike. That's about as fast as cars drive in neighborhoods. You can control the speed with the throttle or by choosing different pedal assist levels.

Can I take the battery off to charge it?

Yes, the battery is removable so you can take it off and bring it inside to charge. This is really helpful if you park your bike outside or live in an apartment where you can't bring the whole bike inside.

What kind of terrain can this bike handle?

The 4-inch fat tires and dual suspension let this bike ride on sand, snow, gravel, dirt trails, and regular pavement. It's built tough for off-road adventures but also works fine on city streets.

Does this bike come with a warranty?

Yes, it comes with a 1-year warranty from the manufacturer. This covers defects and problems with the bike for one year after you buy it, which gives you some protection if something breaks.

Scores

Overall Score 82/100
Value Score 92/100
Popularity 68/100

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Tags

budget friendly high power motor long range fat tire off road capable dual suspension retro style removable battery value champion

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