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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 12 speed cassette sprocket CS-M1250
Home / Products / Cassette Sprocket / Bicycle 12 speed cassette sprocket CS-M1250
Bicycle 12 speed cassette sprocket CS-M1250
CS-M1250

Bicycle 12 speed cassette sprocket CS-M1250

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Sunrun 12-speed super large gear ratio cassette flywheel, gear change range 11-50T, adopts high-strength alloy steel tooth plate + light alloy bracket, frame structure weight reduction design, anti-chain falling off tooth design. The centre of gravity is placed in the centre by balancing the counterweights, so that different parts can move in a balanced way, thus effectively reducing the vibration and jitter when each part is moving, and making the user feel smooth and comfortable.
Ningbo Tongkin Technology Co., Ltd.
About SunRun

Ningbo Dongjin Technology Co., Ltd is China OEM Bicycle 12 speed cassette sprocket CS-M1250 Supplier and ODM Bicycle 12 speed cassette sprocket CS-M1250 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 are the applications of the Bicycle 12 Speed Cassette Sprocket in different riding scenarios?

Application of Bicycle 12 Speed Cassette Sprocket in different riding scenarios
As an important part of modern bicycle technology, the Bicycle 12 Speed Cassette Sprocket demonstrates excellent performance and application value in different riding scenarios. Its application in mountain biking, road riding, urban commuting, and long-distance travel will be discussed in detail below.
In mountain biking, the 12-speed flywheel provides riders with a wider gear range. Whether it’s a steep uphill climb or a high-speed descent, the rider can easily handle various terrains by adjusting the gear combination on the flywheel. This flexibility makes mountain biking safer and more efficient, allowing riders to fully enjoy conquering nature.
For road riding, the 12-speed flywheel focuses on providing a smooth and efficient riding experience. Its tight gear spacing allows the rider to easily handle small speed changes while maintaining high-speed cruising. In addition, the lightweight design also reduces resistance while riding, helping to improve the overall performance of the rider.
For urban commuting, the 12-speed flywheel is also practical. On busy city streets, cyclists may need to accelerate, slow down and turn frequently. The multi-gear design of the 12-speed flywheel allows the rider to adjust the riding speed according to the actual situation and respond to urban traffic conditions more flexibly.
On long journeys, the advantages of the 12-speed flywheel are reflected in its durability and adaptability. Long-term riding may cause some wear and tear on the flywheel, but the high-quality materials and exquisite craftsmanship of the 12-speed flywheel ensure its excellent durability. At the same time, its wide speed range also allows cyclists to easily cope with different road conditions and climate conditions, and enjoy a pleasant riding journey.
All in all, the Bicycle 12 Speed Cassette Sprocket plays an important role in different riding scenarios. Its flexible shifting performance and stable and reliable performance enable cyclists to face various challenges more confidently and enjoy a more colorful riding experience.