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Internal gear hubs are a type of bicycle hub that uses a planetary gearset to change gears. They are typically found on city bikes, touring bikes, and cargo bikes. Internal gear hubs offer a number of advantages over derailleur gears, including:

• Smoother shifting: Internal gear hubs shift gears smoothly and quietly, even under load.
• More efficient: Internal gear hubs are more efficient than derailleur gears, which means you can go farther on a single charge.
• Less maintenance: Internal gear hubs require less maintenance than derailleur gears, as there are fewer moving parts.
• Weatherproof: Internal gear hubs are weatherproof, which means you can ride in all weather conditions.

Internal gear hubs are a popular choice for cyclists who want a reliable and efficient drivetrain. They are especially well-suited for city riding, touring, and cargo hauling.

Here are some of the applications of internal gears hub:

• City bikes: Internal gear hubs are a popular choice for city bikes because they offer a smooth and efficient ride. They are also well-suited for stop-and-go traffic, as they can be shifted gears while stationary.
• Touring bikes: Internal gear hubs are a popular choice for touring bikes because they are durable and reliable. They can also be shifted gears while under load, which is important for carrying heavy loads.
• Cargo bikes: Internal gear hubs are a popular choice for cargo bikes because they can handle the extra weight. They are also well-suited for stop-and-go traffic, as they can be shifted gears while stationary.

Internal gear hubs are a versatile and reliable type of bicycle hub. They offer a number of advantages over derailleur gears, making them a popular choice for a variety of cycling applications.