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Founded in 1991, Ningbo Sunrun Bicycle Co., ltd & Its branch company Ningbo Tongkin Technology Co., Ltd.

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OEM/ODM Bicycle 7 speed rear derailleur
Home / Products / Rear Derailleur / Bicycle 7 speed rear derailleur
  • Describe
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Describe
The Sunrun 7-speed rear derailleur chainstay provides a mature and stable drivetrain that ensures the chain runs smoothly, thus improving the bike's performance and comfort. It can be used with 7-speed spinning flywheel or cassette flywheel for precise gear positioning and compatibility.
Ningbo Tongkin Technology Co., Ltd.
About SunRun

Ningbo Dongjin Technology Co., Ltd is China OEM Bicycle 7 speed rear derailleur Supplier and ODM Bicycle 7 speed rear derailleur company was founded in 1991, specializing in the production of bicycle transmission systems, braking systems and other components. The leading products include a series of derailleurs, variable speed flywheels, high-end cassette hubs, disc brakes, brake components, cranksets and more than 300 varieties in six categories.

In 2015, in response to Made in China 2025, the company established Ningbo Dongjin Technology Co., Ltd. to develop a new internal and external variable speed transmission system, entering the first echelon of the domestic industry. "Chicheng wheel industry, quality first" is the pursuit of quality by Richeng people. The company has introduced internationally advanced key technologies such as precision cold forging, CNC machining, heat treatment, and multi-station stamping to develop transmissions with Richeng characteristics. , transmission kit, sales volume leads domestic peers. The registered brands SUNRUN, TONGKEEN and HEMU enjoy high reputation in domestic and foreign markets. The company has independent export rights, and its products are exported to Europe, North America, Central and South America, Africa, Southeast Asia and other countries and regions. Xu Mingqiang, chairman of the company, sincerely invites domestic and foreign merchants to come for negotiation and guidance.

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Industry Knowledge Extension

How to choose different Bicycle Rear Derailleurs for different riding needs?

Choosing a suitable Bicycle Rear Derailleur for different riding needs is an important decision-making process because it is directly related to riding efficiency and comfort. Here are some suggestions to help you choose based on different riding needs:
1. Mountain biking:
For mountain biking, especially in rough terrain, it is recommended to choose a rear derailleur with strong durability and stability. Such rear derailleurs typically have a sturdier build and a wider shifting range to handle the harsh bumps and frequent shifting demands of mountain biking.
2. Road riding:
Road riding is more about speed and efficiency, so choose a rear derailleur that is lightweight and precise. These rear derailleurs usually have a more compact design and can respond more quickly to shifting commands, helping riders maintain stable speeds and a smooth shifting experience on flat roads.
3. Long distance travel:
For long-distance touring riding, durability and reliability are top of mind. Choose a rear derailleur that has been tested for a long time and has reliable quality to ensure stable operation during long rides and reduce the possibility of failure and repair.
4. City commuting:
For urban commuter riding, a lightweight, durable and easy-to-maintain rear derailleur is ideal. These rear derailleurs typically feature simple shifting systems and rugged construction that can handle the frequent start-stop and shifting demands of city roads.
Additionally, here are some factors to consider when choosing a rear derailleur:
Compatibility: Make sure the rear derailleur you choose is compatible with your bike model, frame size, and existing shifting system.
Brand and quality: Choosing a well-known brand and high-quality rear derailleur usually means more reliable performance and longer service life.
Installation and Maintenance: Consider ease of installation and maintenance of the rear derailleur. Some rear derailleurs have simpler designs, making installation relatively easy and easier to maintain.
To sum up, choosing a suitable rear derailleur for different riding needs is a process of comprehensive consideration. By understanding the demand characteristics in different riding scenarios, combined with the specific configuration of the bicycle and personal preferences, you can make wise choices to improve riding comfort and efficiency.