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

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OEM/ODM 1x11S Bicycle Trigger Shifter
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Ningbo Tongkin Technology Co., Ltd.
About SunRun

Ningbo Dongjin Technology Co., Ltd is China OEM 1x11S Bicycle Trigger Shifter Supplier and ODM 1x11S Bicycle Trigger Shifter 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.


Industry Knowledge Extension

How to perform regular maintenance on the Bicycle Trigger Shifter?

Regular maintenance on your Bicycle Trigger Shifter is key to ensuring the smooth operation of your shifting system. Here are the steps and recommendations for performing regular maintenance:
1. Clean the shifter and shift cable
Use a soft cloth or brush to remove dust and dirt from the surface of the dial. At the same time, check the transmission line for dirt or grease accumulation and use a special cleaner to clean it if necessary. Make sure the shifters and shift cables are kept clean to reduce friction and wear.
2. Check the tension of the transmission cable
Check the transmission cable for proper tension. If the transmission cable is too loose or too tight, it will affect the accuracy and response speed of the transmission. You can adjust the tension of the shift cable by adjusting the tension screw on the thumb shifter to ensure that it is within the appropriate range.
3. Lubricate the transmission and transmission cables
Apply an appropriate amount of lubricant to the derailleur and shift cables to reduce friction and wear. This helps keep your transmission system running smoothly and extending its service life.
4. Check the transmission limit screw
Check whether the limit screw on the transmission is loose or improperly adjusted. The function of the limit screw is to limit the movement range of the chain on the gear to ensure that the chain will not jump out of the gear. If there is any problem with the limit screw, it should be adjusted or replaced in time.
5. Check the transmission chain guide
Check the transmission chain guide for damage or wear. The function of the chain guide is to guide the chain to move between the gears. If the chain guide is damaged, it may cause the chain to skip teeth or get stuck. If necessary, replace the chain guide in time.
6. Check the installation and fixing of the transmission
Make sure the transmission is securely installed and not loose or displaced. If the transmission is not installed stably, it may affect the accuracy and stability of the transmission.
7. Regularly inspect and replace worn parts
Regularly check components such as chains, chainrings and flywheels for wear. If these parts are found to be obviously worn or damaged, they should be replaced in time to avoid affecting the shifting effect and riding safety.
In addition to the above regular maintenance steps, riders are advised to check the status of their shifters and derailleurs before each ride to ensure they are functioning properly. At the same time, avoid riding in bad weather or road conditions to reduce damage to the transmission system.
In summary, regular maintenance of your Bicycle Trigger Shifter is key to ensuring the smooth operation of your shifting system. By cleaning, lubricating, inspecting, and replacing worn parts, you can extend the service life of your transmission system and improve your riding experience.