---
title: "Kuailun Technology officially launched the world's first \"zero-threshold\" ultra-lightweight aircraft X4"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/271736981.md"
description: "Kuailun Technology launched the world's first \"zero-threshold\" ultra-light aircraft X4 at CES 2026. This aircraft complies with the U.S. FAA Part 103 regulations and can legally fly without a certificate of airworthiness or a license. The X4 is equipped with 63-inch carbon fiber folding blades, has a payload capacity of 100 kg, maintains noise levels below 65 decibels, and uses dynamic balancing algorithms to ensure stable hovering in 6-level crosswinds. It supports route planning and manual control, making it suitable for urban commuting and outdoor adventures"
datetime: "2026-01-07T04:41:44.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/271736981.md)
  - [en](https://longbridge.com/en/news/271736981.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/271736981.md)
---

# Kuailun Technology officially launched the world's first "zero-threshold" ultra-lightweight aircraft X4

36Kr learned that at CES 2026, Kuailun Technology officially launched the world's first "zero-threshold" ultra-light flying vehicle X4. It is understood that this product, compliant with the U.S. FAA Part 103 regulations, can legally fly as a manned aircraft without the need for a certificate of airworthiness or a pilot's license. The X4 is equipped with 63-inch carbon fiber folding blades and features a 4-axis 8-rotor layout, providing a payload capacity of 100 kg while keeping noise levels below 65 decibels. Its innovative "dynamic balance algorithm" can adjust the output of 8 motor groups in real-time, ensuring stable hovering even in 6-level crosswinds. Additionally, the X4 supports dual modes of flight route planning and manual control, along with ultra-low altitude flying capability (minimum 3 meters above ground), meeting the full range of needs from urban commuting to outdoor adventures

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