Ride Green. Ride KuKirin.

Warranty Policy

Last Updated: May 2026

At Sync Smart Technology Co., Ltd, we stand behind the quality of our products and provide a 12-month limited warranty for eligible items purchased through our official sales channels.

This warranty applies only to the original purchaser and the originally purchased product. It cannot be transferred to another person or another vehicle. Complimentary gifts, promotional items, and free accessories supplied with an order are not included within the scope of warranty protection.

Warranty registration is completed automatically after successful delivery of the product.

The warranty period begins from the original purchase date. Customers requesting warranty service must provide valid proof of purchase, such as an order confirmation, invoice, or receipt corresponding to the original order.

Rider Eligibility

Our electric scooters and electric bicycles are intended for adult users.

Persons under 18 years of age should only operate these products under the supervision of a parent or legal guardian and in accordance with applicable local laws and regulations.

Theft Exclusion

Warranty coverage does not extend to stolen vehicles.

Customers are encouraged to use appropriate anti-theft devices and store their vehicles securely whenever they are unattended.

1. Warranty Coverage

Subject to technical inspection and confirmation, defective original components may be repaired or replaced within one (1) year from the original purchase date.

The final warranty determination is made by our authorized technical support team.

1.1 Battery Warranty

Original lithium-ion batteries supplied with eligible products are covered by a 12-month limited warranty against verified manufacturing defects.

Where an eligible defect is confirmed, replacement parts or repair solutions will be provided without charge for the battery itself during the warranty period.

Battery inspections and warranty decisions are performed exclusively by our authorized technical personnel.

Battery Warranty Exclusions

Warranty coverage does not include:

Normal wear of consumable components requiring periodic replacement.
Tires, inner tubes, brake pads, cables, grips, chains, spokes, kickstands, lights, LCD housings, pedals, cranksets, saddles, shifters, and similar maintenance items.
Damage caused by accidents, racing, stunt riding, misuse, abuse, negligence, or improper operation.
Exposure to water, chemicals, excessive moisture, dirt, or abnormal physical stress.
Cosmetic damage including scratches or dents not resulting from manufacturing defects.
Products with removed, altered, or unreadable serial numbers or identification labels.
Failures resulting from unauthorized accessories or third-party replacement components.
Improper assembly, maintenance, installation, or adjustments inconsistent with the user manual.
Damage caused by collision, fire, flooding, storms, lightning, theft, electrical surges, or other external environmental factors.
Battery damage resulting from incompatible chargers, improper charging practices, battery modification, or installation in unauthorized equipment.

1.2 Frame Warranty

The original scooter or bicycle frame is covered by a one-year replacement warranty for verified manufacturing defects.

Coverage applies only to replacement of the frame itself and does not include labor costs associated with transferring motors, wiring, controllers, or other installed components.

Warranty eligibility is determined by our technical assessment team.

Frame Warranty Exclusions

Coverage does not include:

Rust or corrosion
Oxidation
Paint fading
Cosmetic scratches
Surface damage
Impact damage from collisions
Structural damage resulting from accidents
Drilling, welding, or unauthorized frame modification

1.3 Electrical & Mechanical Components

The following original components are covered against manufacturing defects for one (1) year:

Motor
Electronic controller
Battery
Charger
Throttle
Pedal assist sensor
Display panel

Where an eligible manufacturing defect is confirmed, replacement components may be provided in accordance with this warranty policy.

Component Warranty Exclusions

Warranty protection does not apply to:

Accidental damage
Racing or stunt use
Improper use or negligence
Water or chemical exposure
Moisture or dirt ingress
Abnormal mechanical stress
Cosmetic scratches or dents unrelated to manufacturing
Altered or missing serial numbers
Unauthorized accessories or replacement parts
Improper installation or maintenance
Fire, flooding, storms, lightning, theft, electrical faults, or power surges
Normal aging and wear of consumable items including tires, brake components, and other regularly replaceable parts

2. Warranty Claims

To request warranty service, please contact our support team:

Email: info@kukirineurope.com

A warranty request should include:

Valid proof of purchase
Order number or invoice
Clear photographs or videos demonstrating the reported issue
Relevant product information when requested

For approved claims involving replacement displays, batteries, motors, controllers, or similar components, customers are responsible for applicable shipping and transportation costs.

Replacement parts supplied under warranty are provided free of charge; however, installation fees or third-party labor expenses are not included.

3. Technical Support & Service

If your product develops a performance issue during the warranty period under normal operating conditions, our technical support team will assist with troubleshooting and determine the appropriate solution.

Where applicable, replacement components or warranty service arrangements will be provided following technical evaluation.