Acera RD-M3020 8spd Rear Derailleur

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The Double Servo construction of the Shimano Acera RD-M3020 rear derailleur for mechanical 7- and 8-speed shifting systems provides smooth yet precise shifting performance with eve ry gear change. In doing so, it not only covers a wide range of applications, but also allows you to ride challenging terrain with a minimum of interruptions. Features: Double Servo construction for smooth and precise shifting Versatile performance and wide compatibility Max. low sprocket: 40T Total capacity: 45T Show more