Shimano Acera RD-M3020-8 SGS Long Cage Rear Derailleur for 7/8 Speed Category_Wheel Bag Specifically designed for wet and

Specifically designed for wet and muddy conditions

Quick Release 9x135mm

Unlike the mountain bike and the gravel version

Fratelli tape is also perfect for winter riders

C61 cadence sensor has an exclusive patented algorithm

Shimano Acera RD-M3020-8 SGS Long Cage Rear Derailleur for 7/8 Speed Category_Wheel Bag Specifically designed for wet andSHIMANO ACERA Rear Derailleur 8 speed RD M3020 8 NEW Double Servo rear derailleur with smooth, precise shifting performance and wide range capability. The SHIMANO ACERA M3020 8 rear derailleur with Double Servo technology helps you ride challenging terrain with fewer interruptions. FEATURES Double Servo construction for smooth and precise shifting Versatile performance and wide compatibility Max. low sprocket: 40T Total capacity: 45T PRODUCT