Lankeleisi X-Black Knight 1000W*2 Dual Motor 20" Fat Bike Full Suspension E-Mountain Bike 45Ah Samsung Battery E-MTB


For the following categories of products, uk.buybestgear will provide warranty service if there are any quality problems or non-human caused problems. Warranty time starts from the time when you receive the goods. Please note that any overdue requests will not be accepted. 


Reference of Quality Guarantee Solutions: 

  1. Refund: partial refund / full refund / return and refund.
  2. Reship: resend the partial parts / resend a new product
  3. Repair: send the product to our local repair center to get


Please read the category warranty policy below, for each category the warranty may vary

Product category

Warranty period

Warranty Solutions


Frame / Folded Components / Handlebar / Folding Stem / 

Disc Brakes / Front Fork /   Accelerator / Brake Device / Controller / Displaying Meter / Motor / Front Light / Rear Light

1 year

Reship / Refund

Electric Bike

Motor / Controller / Battery / Charger / Front Fork / Rear Derailleur / Handlebar

1 year

Front light / Tail light / Brake light / Mechanical brake device / Electric brake / Electric accelerator 

3 Months

Paint Logo / Decoration strip   

Foot pad

15 Days



  1. For products purchased with large promotional discounts (half-and-above discounts, free gifts, giveaways, etc), if there are any quality issues, refund is the only available option. 
  2. Natural product degradation through wear and tear, along with breakage/damage during use, is solely the customer's responsibility and is not covered by our warranties.
  3. If the product is damaged/misused by customers, the warranty will be invalid immediately. No compensation is available in such cases. 
  4. Proof is needed for any non-human quality problems, such as pictures or videos.
  5. [The warranty is invalid if the customer operates the product under the following circumstances]:
- refresh the hardware or root the device
- open the product to fix the device
-modify, delete, customize or exchange product components
-use the device in an inappropriate manner
-continue to use the item once a fault occurs and causes more damage

To help you enjoy shopping at BuyBestGear, we provide a return and refund policy as follows:

We accept exchange, return, or refund applications within 14 days from the date the item is delivered (subject to the order tracking record).

Please send an email to and include the following information:

  1. Your order number (e.g.BBGUK11001)
  2. The item name and quantity you want to return.
  3. Reasons why you want to return the item (items).
  4. Attach pictures or videos if the item is defective.

NOTE: Please make sure the photos or videos are clear and focused at a proper distance. Thank you for your cooperation.


After receiving your email, we will take a close look at the proof you provided, including descriptions, pictures, and videos. If it is determined that the item is defective, we will carry out the return procedure and inform you by email:

  • We provide the return warehouse address according to the specific item and shipping address.
  • You pack the items and send the confirmation email to us.
  • The courier will pick up the package from your place.
  • Our warehouse receives returned items and sends the confirmation.
  • We examine the returned items.
  • We send the new item or arrange a refund to your payment account in 1-3 business days.

Please note that we will NOT approve the return/refund under the following circumstances:

  1. No returns after 14 days of receiving;
  2. To be eligible for a return, The bike/Ebike Must NOT be assembled
  3. The box must be sealed and unopened
  4. Customer pays to ship both ways (Original shipping cost is withheld from refund);
  5. Subject to up to a 25% restocking fee (this is withheld from refund);
  6. Ebikes/Bikes that have been Registered in the Buyer's Name officially CAN NOT be returned

Order Status Requirements Refund Amount
Cancel orders within 48 hours (before dispatch) Apply within 48 hours 100% order amount
Cancel orders OVER 48 hours 
(before dispatch)
- 95% of the order amount
(deduct 5% processing fee)
Dispatched but not signed
(wrong address or other reasons)
1. Reject the goods and return them immediately after receiving the goods.

2. Warehouse inspection and quality inspection pass
70% of the order amount (deduct 10% return shipping fee + 15% restocking fee + 5% processing fee)
Dispatched but not signed 1. Initiate a refund within 14 days of receipt of the goods.

2. RMA forms are approved by E-mail
70% of the order amount (deduct 10% return shipping fee + 15% restocking fee + 5% order processing fee)
Delivered 1. Initiate a refund within 14 days of receipt of the goods
2. The bike/Ebike is Unassembled, and the box is sealed and unopened
3. The package is sent and the photos are approved
80% of the order amount (deduct 15% warehouse restocking fee + 5% order processing fee)
Note: Customer is responsible for all freight charges.

Missing some parts or accessories

We accept reship parts or accessories applications within 7 days from the date the item is delivered (subject to the order tracking record).

Please send the application to

After receiving your email, we will take a close look at the proof you provided, including descriptions, pictures, or videos. If it is determined that the parts is missing, we will carry out the reship procedure and inform you by email:

Please note that we will NOT approve the return/refund under the following circumstances:

  1. The parts are not included as we confirmed with our supplier. 
  2. The package weight from our warehouse indicates that there aren't any parts missing.

Return an item to exchange for another item

We accept exchange applications within 14 days from the date the item is delivered (subject to the order tracking record).

We kindly remind you that in this case, you must send the item to our return warehouse at your own cost and risk(including any shipping fee, taxes and duties) from the return.

After that please send the tracking number to We will re-arrange the delivery of new products for you within 1-3 business days depending on stock availability.

Special Note About the Refunds

The refunds are processed 1-2 business days after receiving the returned items. The refund time depends on the payment method:

1. PayPal refunds may take up to 48 hours.

2. Credit card refunds will take around 7-14 business days. The specific time depends on your credit card company and any intermediaries.  


Main Features

Dual-motor electric bike (1000W x 2)( Top speed: 15.5mph )
Dual 48V 1000W Brushless Motor has high performance, more power, and faster acceleration. The rear and front hub motors offer unmatched performance on climbs, deep snow, and even mud.

Dual Removable Samsung 21700 Battery (25Ah + 20Ah)
25Ah & 20Ah dual removable lithium battery powers the X-BLACK KNIGHT to travel for up to 73-84miles range in pure electric mode, 155-173miles range in power assist mode on a full charge.

4.5" Led front light+rear tail light
4.5" Circular LED headlights with built-in electronic horns,headlights operate at 780 lumens of large flood light angle.It has a wider range of light and a built-in 95-decibel electronic horn to alert pedestrians and vehicles to safe driving. When riding at night or at night,turn on the taillight working mode to remind pedestrians and vehicles to drive safely.

Cargo Bike Rear Rack Design
X-Black Knight is equipped with a cargo bike rear rack for a more daily using & multi condition using. It can carry up to 50kg weight, so it's perfect for transporting goods, food or delivery.


Brand Lankeleisi
Meter Display Color LCD meter
Frame Material 6061 Aluminum alloy
Battery 45Ah Samsung battery
Battery Voltage 48V
Charger Voltage 48V*3A
Charger Plug Type EU Standard
Charging Time 48v 25Ah 8-9H
48V 20Ah 6-7H
Motor Wattage 1000W*2
Torque Front 80 N.m / Rear 80 N.m
Speed Level 5 Level
Mechanical Shift Shimano Altus 7s
Riding Modes 1. Electric-only mode
2. Cycling mode (without electricity)
3. Pedal-assist mode"
Tire 20 x 4.0"
Brake Hydraulic Disc Brakes
Shock Absorber Front oil spring suspension & 2*Soft tail rear oil spring shock absorber
Gradeability 45°
Max Speed 15.5mph (can be unlocked)
Mileage of Pure Electric 120-140 KM ( 73-84miles)
Mileage of Assistance 240-280 KM (155-173miles)
Maximum Load 200 KG
Rear Seat Bracket Maximum Load 50 KG
Suitable Height 170-190cm
Mudguard Front & rear fender
Waterproof Level IP54 life waterproof can be used in the rain
Net Weight of the Bike 48KG
Weight of Battery 9.5kg (2 batteries in total)
Gross Weight 51KG
Product Size 178cm *111cm* 85cm
Folding Size /
Package Size 153×30×85cm
Accessories Pack Rear Seat Bracket*1
Install kits*1
Battery charger*2
Customer Reviews
Write review
Customer Reviews
Wow you reached the bottom
Most liked
Highest ratings
Lowest ratings
The review would not show in product details on storefront since it does not support to.