Ningbo Sunrun Industry & Trade Co., LTD.
Ningbo Sunrun Industry & Trade Co., Ltd. manufactures bicycle and e-bike transmission and braking components, offering a wide product range backed by in-house R&D, testing, and precision processes.
Est. 1991SHENGSHAN INDUSTRY ZONE, CIXI, NINGBO, CHINA.
About Ningbo Sunrun Industry & Trade Co., LTD.
Ningbo Sunrun Industry & Trade Co., Ltd. is a specialized manufacturer of bicycle transmission parts, producing a broad portfolio that covers derailleur systems, freewheels, chainwheel and crank sets, brake sets, hubs, bottom brackets, and related accessories. The company also develops components for electric bicycles, including controllers, motors, mid-drive motors, instrument panels, and torque sensor kits.
With a strong focus on product development, the company supports OEM/ODM projects and can develop and manufacture to customer drawings or samples. Manufacturing capabilities highlighted include high-precision cold-forging, numerical control (CNC) processing, and heat treatment, supported by in-house laboratory and testing equipment for quality assurance.
The SUNRUN brand is recognized in both domestic and international markets, with products sold across Europe, Central & South America, and Southeast Asia. Large-scale production capacity supports stable supply for a wide range of purchasing volumes.
Core Focus
- Manufacturing Specialty
- Bicycle and e-bike transmission systems, braking systems, and related components
Product Portfolio
Main Product Categories
Derailleur setsFront derailleursRear derailleursFreewheelsCassette freewheelsMulti-speed freewheelsChainwheel & crank setsBrake setsDisc brakesHubsBottom bracketsShifters (thumb/trigger)Twist shiftersE-bike torque sensor kitsControllersMotorsMid-drive motorsInstrument panels
Engineering & Customization
Development to Drawing or Sample
Backed by a dedicated R&D capability, the company can develop and manufacture products based on customer drawings or samples to support tailored bicycle and e-bike drivetrain solutions.
Quality Assurance
In-House Lab and Testing Equipment
Quality management is supported by an internal laboratory and testing equipment, helping ensure consistent performance and reliability across product lines.
Manufacturing Capabilities
Key Processes
- High-precision cold forging
- Numerical control (CNC) processing
- Heat treatment
Brand
- Registered Brand
- SUNRUN
Production Capacity
- Annual Capacity (Accessories)
- Annual output of bicycle parts and accessories exceeds 10 million sets.
Annual Output (Transmission Parts & Brakes)
6,000,000sets/yearDerailleur sets
3,000,000pcs/yearFreewheels
1,500,000sets/yearChainwheel and cranks
3,000,000sets/yearBrake sets
Markets
Export Regions
EuropeCentral AmericaSouth AmericaSoutheast Asia
Company Structure
Integrated Manufacturing Footprint
The company operates with its own processing facilities and has two in-house OEM factories to support direct manufacturing and cost-efficient supply.
Company Overview
Quality as the Foundation
The company positions quality as a core priority, combining process control and testing to support dependable performance in demanding riding conditions.
Contact Information
- Address
- SHENGSHAN INDUSTRY ZONE, CIXI, NINGBO, CHINA.
- Phone
- +86 574 6354 2203
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