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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 9S MTB Bicycle Cassette Sprocket
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Ningbo Tongkin Technology Co., Ltd.
About SunRun

Ningbo Dongjin Technology Co., Ltd is China OEM 9S MTB Bicycle Cassette Sprocket Supplier and ODM 9S MTB Bicycle Cassette Sprocket 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

What MTB Bicycle Cassette Sprocket range should you choose for mountain trail riding?

Choosing the right MTB Bicycle Cassette Sprocket range is very important when riding cross-country, as it will directly affect your climbing ability, downhill speed, and overall riding comfort. Here are some suggestions to help you determine the range of freewheels and sprockets you should choose for mountain trail riding:

Consider terrain relief:
If you often ride on rough and steep terrain, it is recommended to choose a freewheel sprocket with a wider gear ratio range. For example, an 11-42T or 11-46T cassette sprocket will give you plenty of climbing ability while maintaining a high speed on the descents.
Riding style and fitness:
Your riding style and fitness level will also influence cassette sprocket choice. If you are a cyclist who likes to challenge steeper and more technical difficulties, then choosing a wider range of freewheel sprockets will be more suitable. And for riders who are less able or who prefer a smooth ride, a narrower range of cassette sprockets may be sufficient.
Front and rear chainrings:
The choice of flywheel sprocket also needs to be matched with the front and rear chainrings. If you have a larger front chainring, you can choose a freewheel sprocket with a smaller minimum gear ratio to ensure a stable riding rhythm when climbing hills. Conversely, if you have a smaller front chainring, you may want to choose a cassette sprocket with a larger minimum gear ratio.
Brand and quality:
When choosing a freewheel sprocket, also consider brand and quality. Some well-known brands such as Shimano, SRAM and Campagnolo provide a variety of freewheel sprockets of different specifications and quality for you to choose from. Choosing a quality, reliable flywheel sprocket ensures longer service life and better performance.
Consult a professional:
If you are still unsure about the choice of freewheel sprocket, it is recommended to consult a local bicycle shop, a professional cycling instructor or an experienced cycling enthusiast. They can give you more specific advice based on your specific needs and riding style.
To sum up, when riding in mountain cross-country, choosing a suitable flywheel sprocket range requires considering factors such as terrain undulations, riding style and physical fitness, front and rear chainring combinations, and brand and quality. By taking these factors into consideration, you will be able to find the cassette sprocket range that best suits your riding needs.