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

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OEM/ODM 2x9S Bicycle Trigger Shifter
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Ningbo Tongkin Technology Co., Ltd.
About SunRun

Ningbo Dongjin Technology Co., Ltd is China OEM 2x9S Bicycle Trigger Shifter Supplier and ODM 2x9S 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 effectively use the Bicycle Trigger Shifter for shifting?

Bicycle Trigger Shifter, as a common transmission system operation method on modern bicycles, is crucial for cyclists to master its efficient use. This not only helps improve riding efficiency, but also provides a smoother and more comfortable experience while riding.
First of all, it is basic to be familiar with the location and operation of the transmission. Each shifter is usually marked with the corresponding gear position, and the rider should know the current position of the shifter so that adjustments can be made quickly. Also, become familiar with the push and pull actions of the thumb shifters and how they control the movement of the front and rear derailleurs.
Second, anticipating shifting needs is key. During riding, factors such as road conditions, slope, riding speed, etc. will affect the need for speed changes. Therefore, riders should observe and anticipate these situations in advance so that they can shift at the appropriate time. For example, when approaching an uphill section, you should switch to a smaller gear combination in advance to reduce the riding burden; while when going downhill or on a flat road, you can switch to a larger gear combination to increase the riding speed.
It's also important to maintain a smooth motion when changing gears. Sudden or violent shifting movements can cause the chain to create excessive friction between gears or skip teeth. Therefore, the rider should try to maintain a smooth riding speed when changing gears, and gently press or pull the shifter to make the derailleur move smoothly to the new position.
In addition, attention to the position of the chain cannot be ignored. During shifting, the rider should observe whether the chain moves smoothly from one gear to another. If the chain is stuck or skips teeth, stop shifting immediately and check whether the position of the derailleur is correct. Sometimes, a slight adjustment to the position of the transmission can solve the problem.
Finally, regular transmission maintenance is also an important part of ensuring efficient shifting. Keeping the transmission clean and lubricated ensures a smooth cable system, thereby improving shifting accuracy and efficiency.
In summary, effectively using the Bicycle Trigger Shifter for shifting requires the rider to be familiar with how the derailleur operates, anticipate shifting needs, maintain a smooth shifting action, pay attention to chain position, and regularly maintain the derailleur. By mastering these techniques and methods, riders can respond to different riding scenarios more flexibly and enjoy a smoother and more comfortable riding experience.