QS138 70H V3 3kW Motor

Introducing the QSMOTOR QS138 V3 70H 3kW 72V Mid-Drive Motor with 1:2.35 Gearbox
Powerful. Efficient. Compact.

The QSMOTOR QS138 V3 70H Mid-Drive Motor sets a new benchmark for electric dirt bikes, motorcycles, and ATVs. With its integrated 1:2.35 gearbox and advanced PMSM (Permanent Magnet Synchronous Motor) technology, this motor delivers robust performance in a lightweight and compact package. Designed to conquer tough terrains and steep slopes, the QS138 V3 combines high efficiency with superior torque for maximum mobility.

Key Features

• Peak Power Output: 5.5kW for enhanced climbing and acceleration
• Integrated Gearbox: 1:2.35 ratio for compact design and optimal torque delivery
• Flux Weakening Technology: Enables high-speed performance while maintaining energy efficiency
• Regenerative Braking: Supports energy recovery during braking for extended range
• Durable Construction: IP67-rated for water resistance, ensuring reliable performance in challenging environments
• Lightweight Design: Compact structure reduces vehicle weight for improved handling

Specifications

• Voltage: 72V
• Continuous Power: 3kW
• Peak Power: 5.5kW
• Cooling Method: Air-cooled
• Top Speed: 100–105 km/h
• Torque: Optimized for high gradient slopes (up to 31° at 50 km/h)
• Gear Ratio: 1:2.35 (integrated)
• Weight: 15.5 kg

Applications

The QS138 V3 is ideal for mid-drive applications, including:

• Electric Dirt Bikes
• Electric Motorcycles
• Electric ATVs

Why Choose the QS138 V3?

The QS138 V3 stands out with its advanced integrated gearbox, offering a seamless combination of torque and speed without the need for a dual-step transmission. Whether you're climbing slopes, racing on dirt tracks, or navigating urban streets, this motor provides high efficiency and excellent performance in all scenarios.

Experience cutting-edge electric mobility with the QSMOTOR QS138 V3 70H.

User Responsibility: It is the user's responsibility to thoroughly inspect all products upon delivery, ensure that all components are functioning properly, and complete the installation. We highly recommend that users have a good understanding of battery systems before installation. If unsure about any aspect of the controller, such as installation or safety checks, please contact us for guidance. The necessary checks must be performed to guarantee safe operation. We are not liable for any issues that arise after delivery, such as damages from improper installation or user error. Any damage incurred during installation or use is the sole responsibility of the user. For warranty and return details please check out the 'Returns & Warranty' Page on our site.