CGQS8 Speed Sensor for TSDZ2-C, TSDZ8, and TSDZ16 Electric Motors
The original CGQS8 speed sensor is designed for Tongsheng TSDZ2-C, TSDZ8, and TSDZ16 mid-drive motors. It accurately measures the bicycle's speed and transmits the data to the motor controller, ensuring proper pedal-assist operation and displaying the current speed on the bike's display. The sensor works with a spoke-mounted magnet, with a recommended gap of 5–15 mm between the sensor and the magnet.
It is the ideal replacement for a damaged or worn speed sensor, providing reliable system performance and easy installation without any modifications to the wiring.
Key Features:
- Original CGQS8 speed sensor
- Compatible with Tongsheng TSDZ2-C, TSDZ8, and TSDZ16 motors
- Accurate speed measurement
- Works with a spoke-mounted wheel magnet
- Plug & Play installation
- Durable, weather-resistant construction

Application:
This sensor is intended to replace a faulty speed sensor in Tongsheng mid-drive motor systems. Proper operation ensures accurate speed detection, reliable pedal-assist performance, and correct communication with the motor controller.
The store guarantees repair or replacement of equipment for up to 24 months for consumers and 12 months for companies from the date of purchase. Complete the complaint form available on the store's website.
What is not covered by the warranty?
- Errors in installation or maintenance
- Thermal damage (overheating)
- Modification/interference in the device casing
- Modifications/changes inside the device
- Mechanical damage caused by incorrect use of the product. e.g. damage from falls, excessive mechanical loads

