After-sales Policy

Thank you for purchasing a KST product. If you are experiencing issues with your servos, feel free to contact us so we could assist. Reach us on

  • The KST servos warranty is valid for one year from the date of purchase, it covers the servo as an entirety to be free from defects in workmanship.
  • Only the initial owner is covered under the warranty, units bought used are not covered.
  • Proof of purchase must be provided upon request.

If a component is deemed faulty, the service center will assist in one of two ways:  

  • Provide replacement parts for the user to change out.
  • Connects the user with our service center (China). The user will need to cover one way shipping from their location to the service center. Service center staff will diagnose, fix and ship the unit back to the user.

We are unable to accept requests beyond the two methods listed above.


  • Damage caused by mishandling (wrong polarity, over current, humidity etc.), external forces, aftermarket hardware changes and changes in firmware are not covered under warranty.
  • The terms of service are subject to change without prior notice.