Inner Primary Drive Cover

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The primary drive in a motorcycle is the system that transmits power from the engine to the gearbox. This is typically accomplished using a chain or belt, or sometimes a set of gears. The primary drive is an important part of the motorcycle's overall transmission system, and its condition and operation can significantly impact the motorcycle's performance.

In most motorcycles, the primary drive is located between the engine and the clutch. When the engine turns, it causes the primary drive to turn as well, which in turn rotates the gearbox and ultimately drives the rear wheel of the motorcycle.

The type of primary drive used can vary depending on the type of motorcycle. For example, sport bikes often use a chain drive because it is lightweight and efficient, while cruiser motorcycles often use a belt drive because it is quiet and requires less maintenance. Some motorcycles, particularly older models, may use a direct gear drive.