Home X5 20-Inch Fat Tyre Electric Mountain Bike
Black AAIRSK X5 fat tyre electric bike, front three-quarter view showing headlight and front suspension.
AAIRSK X5 fat tyre electric bike product overview video.
AAIRSK X5 black electric bike from the opposite front angle, showing chain drive, battery and disc brakes.
AAIRSK X5 rear hub motor cutaway graphic with 748W rated power label.
AAIRSK X5 feature diagram showing removable battery, hub motor, disc brakes, suspension fork and fat tyres.
AAIRSK X5 handlebar display showing speed and battery level, with headlight, horn and riding mode controls.
AAIRSK X5 electric bike and removable 48V 15Ah lithium battery shown charging separately.
Rider on an AAIRSK X5 with 20 x 4-inch fat tyres, alongside mountain, city, snow and sand terrain images.
AAIRSK X5 dimension diagram with a rider for scale and close-ups of the headlight and rear light.
Black AAIRSK X5 electric bike pictured with a cable lock, folding multi-tool and hand pump.
Black AAIRSK X5 fat tyre electric bike, front three-quarter view showing headlight and front suspension.
AAIRSK X5 fat tyre electric bike product overview video.
AAIRSK X5 black electric bike from the opposite front angle, showing chain drive, battery and disc brakes.
AAIRSK X5 rear hub motor cutaway graphic with 748W rated power label.
AAIRSK X5 feature diagram showing removable battery, hub motor, disc brakes, suspension fork and fat tyres.
AAIRSK X5 handlebar display showing speed and battery level, with headlight, horn and riding mode controls.
AAIRSK X5 electric bike and removable 48V 15Ah lithium battery shown charging separately.
Rider on an AAIRSK X5 with 20 x 4-inch fat tyres, alongside mountain, city, snow and sand terrain images.
AAIRSK X5 dimension diagram with a rider for scale and close-ups of the headlight and rear light.
Black AAIRSK X5 electric bike pictured with a cable lock, folding multi-tool and hand pump.

X5 20-Inch Fat Tyre Electric Mountain Bike

Built around a removable 48V 15Ah battery, 20 x 4.0-inch fat tyres and NFC card access.

Sale price $589.00
Unit price $589.00  per  item
sold in last hours

🔰 What Makes It Special:

  • 🔋 Removable 48V 15Ah Battery: Take the battery off the bike when needed for separate handling and storage.
  • 🛞 20 x 4.0-Inch Fat Tyres: Wide tyres give the X5 a bold stance in a compact 20-inch wheel format.
  • 📲 NFC Card Access: Use an NFC card to access the bike's electronic system before your ride.
  • 🔧 Front Suspension Fork: Helps soften bumps on uneven surfaces for a more comfortable ride.
  • 🛑 Front & Rear Mechanical Disc Brakes: Mechanical disc brakes at both wheels put braking control at your fingertips.
Vendor: Aairsk
Color: Black

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Delivery Time

  • US: 2-5 Business Days
  • UK: 3-5 Business Days
  • Other: 5-12 Business Days

Return within 30 days of purchase. Duties & taxes are non-refundable.

Order in the next to get it between and

Carbon-neutral shipping on all orders
1067kg
shipping emissions removed
That's like...
2730
miles driven by an average gasoline-powered car

The  X5 is a 20-inch fat tyre electric mountain bike designed for adult riders. It combines 20 x 4.0-inch fat tyres with a removable 48V 15Ah battery, front suspension and front-and-rear mechanical disc brakes. NFC card access adds a practical touch to everyday setup, while the compact wheel format gives the X5 its distinctive mountain-bike profile. 

  • Brand:AAIRSK
  • Model:X5Product
  • Category:Electric Mountain
  • BikeColour:Black
  • Wheel Size:20 in
  • Tyre Size:20 x 4.0 in Fat Tyres
  • Battery:48V 15Ah Removable Battery
  • Brakes:Front & Rear Mechanical Disc Brakes

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Is the X5 supplied with a battery?

Yes. The product information for the referenced Amazon listing states: Included Components — Ebike (includes battery). For the EU version, the battery specification should be shown as 48V 15Ah removable battery only after it matches the delivered battery label and your exact SKU.

Can I remove the battery?

The referenced Amazon listing describes a 48V 15AH Removable Battery. Confirm the removal and charging instructions in the EU manual before publishing the final operating guidance.

What tyre size does the X5 use?

The supplied product material and the referenced Amazon listing both identify 20 x 4.0-inch fat tyres. Check the tyre sidewall on the delivered unit before publishing replacement-tyre guidance.

Does the X5 have disc brakes?

The referenced materials describe dual disc brakes; earlier manufacturer material specifies front and rear mechanical disc brakes. Confirm the exact EU component configuration before publishing the final specification table.

Is the X5 pre-assembled?

The referenced Amazon brand Q&A says the US-market bike is 90% pre-assembled and names the handlebar, front wheel, light and pedals as installation items. Use this only after your EU packing list and installation guide confirm the same assembly state and steps.

Is NFC card access included?

The supplied EU product information mentions NFC, but readable text on the referenced Amazon US listing does not. Confirm the EU display, cards, battery lock and instruction manual before publishing this feature.

What is the motor power and top assisted speed?

These must be confirmed for the exact EU SKU before publication. The available source materials conflict across markets. The product page should show the continuous rated power, assist cut-off behaviour, top assisted speed and any throttle behaviour exactly as documented for the delivered EU version.

What riding modes are available?

The referenced Amazon US page lists PAS, pure-electric and pedal modes. Do not use this as an EU-version answer until the EU controller configuration is confirmed.

What is the real riding range?

Range changes with rider weight, terrain, temperature, tyre pressure, assist level, speed and stop-start riding. A fixed EU range should not be published until a test claim and its conditions are confirmed for this battery and controller configuration.

Is the X5 suitable for public-road use in my country?

Road-use rules and product classification depend on the exact configuration and the country. Check the confirmed EU version documentation and applicable local rules before use. This FAQ does not state that the product is road-legal.

What is included in the box?

Publish a complete itemised packing list only after it is confirmed for your EU SKU. Do not assume that a bag, lock, pump, mirror, mudguards or other accessories visible in product imagery are included.

How long does assembly take?

The Amazon US Q&A says 15–30 minutes for its version. Do not promise an assembly time for the EU version until the packaging, required steps and supplied tools are confirmed.

What warranty and technical support do you provide?

Publish your own EU seller policy, including the responsible contact, repair process, spare-parts availability, commercial warranty terms and the consumer rights that apply to your market. Do not copy the Amazon US claim of free replacement parts or lifetime technical support unless your supply agreement supports it.

Black AAIRSK X5 electric bike pictured with a cable lock, folding multi-tool and hand pump.

X5 20-Inch Fat Tyre Electric Mountain Bike

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