Electronic 3 Speed Internal Gear Hub Automatic Igh 6 Bolt Disc Brake

Product Description

Electronic 3-Speed Internal Gear Hub | Official Product Description

1. Product Overview

The Electronic 3-Speed Internal Gear Hub is designed for premium e-bikes and smart urban mobility vehicles that require smoother shifting, cleaner frame integration, and lower routine maintenance. With an integrated electronic control structure, this hub combines a 3-speed internal gear system, automatic shift logic, and Bluetooth manual shifting into one compact drivetrain solution.

Compared with exposed external shifting systems, the enclosed hub structure helps protect the transmission components from dust, water, impact, and daily riding wear. Its integrated design also eliminates the need for an external electronic control box, making it especially suitable for high-end flat-bar e-bikes, city commuter bikes, and modern electric bicycle platforms that require a clean appearance and stable riding performance.

2. Key Features

• Dual Shifting Mode: Supports automatic intelligent shifting and Bluetooth manual shifting for different riding preferences.
• 217% Gear Range: Provides three gear ratios for smooth starts, efficient cruising, and climbing support.
• Electronic Auto Shift: Automatically adjusts gear selection based on riding conditions for a more natural cycling experience.
• Smooth Shifting Under Load: Helps maintain stable power connection during loaded riding or uphill conditions.
• Start Gear Preselection: Automatically returns to the starting gear when the bike stops, making take-off easier and smoother.
• Integrated Design: Built without an external electronic control box, supporting cleaner vehicle layout and premium e-bike appearance.
• Sealed Hub Structure: Helps reduce external damage, contamination, and usage failure, improving long-term system reliability.

3. Technical Advantages / How It Works

This 3-speed internal gear hub uses an enclosed transmission structure with three gear ratios: 1.00, 1.47, and 2.17. The system is designed to provide stable power output across common urban riding conditions, from low-speed starts to higher-speed cruising.

In automatic mode, the hub can manage gear changes through its electronic shifting system, reducing the need for manual operation. During climbing or heavy-load riding, the system can support automatic downshifting to increase torque and maintain stable riding power. When the vehicle stops, the hub can return to a suitable starting gear, helping the rider restart with less effort.

For riders who prefer personal control, Bluetooth manual shifting allows gear selection in different riding scenarios. This dual-mode design gives the product both intelligent automation and user-controlled flexibility, making it suitable for e-bike brands that want to improve riding comfort and product differentiation.

4. Product Features

• Compact 3-speed electronic internal gear hub for premium e-bike applications.
• Automatic and Bluetooth manual shifting modes for flexible riding control.
• 6-bolt disc brake compatibility for modern e-bike brake systems.
• Aluminum hub shell for a balance of strength and weight control.
• CAN communication interface for smart vehicle system integration.
• 142 mm O.L.D. and 198 mm axle length for compatible frame structures.
• 1.94 kg reference weight for lightweight integrated drivetrain design.
• Suitable for high-end urban bikes, commuter e-bikes, and smart mobility platforms.

5. Technical Parameters

6. Applications

This electronic 3-speed internal gear hub is suitable for premium e-bikes, high-end flat-bar electric bicycles, city commuter bikes, cargo e-bikes, and other short-distance mobility vehicles. It is especially valuable for OEM projects that require a clean frame layout, intelligent shifting experience, and reduced external drivetrain exposure.

For vehicle brands, the integrated electronic structure helps simplify appearance design while improving drivetrain intelligence. For riders, the automatic shift logic and manual Bluetooth option provide a more comfortable riding experience across starts, climbs, cruising, and stop-and-go urban traffic.

7. FAQ

Q1: What type of bike is this product suitable for?

A1: This product is suitable for premium e-bikes, urban commuter bikes, high-end flat-bar electric bicycles, and smart mobility platforms that require an integrated 3-speed internal gear hub.

Q2: Does this hub support automatic shifting?

A2: Yes. The product supports automatic intelligent shifting. It can also support Bluetooth manual shifting, allowing riders to choose automatic or personalized control depending on the riding scenario.

Q3: What is the total gear ratio of this product?

A3: The total gear ratio is 217%. The three gear ratios are 1.00, 1.47, and 2.17, offering support for starting, climbing, and efficient cruising.

Q4: Does this product require an external electronic control box?

A4: No. This model uses an integrated electronic design without an external control box, helping the vehicle achieve a cleaner appearance and more compact structure.

Q5: What should be confirmed before using this product in a vehicle project?

A5: Before sampling or production, the vehicle frame structure, O.L.D., brake type, controller protocol, voltage system, wheel size, chainline or belt line, and operating conditions should be confirmed with the technical team.

Q6: Can this product be customized for OEM projects?

A6: Project adaptation can be discussed based on the bike frame, drivetrain layout, braking system, communication interface, and target riding scenario. Final configuration should follow confirmed drawings and technical specifications.