Shimano Acera RD-M3020-8 SGS Long Cage Rear Derailleur for 7/8 Speed Size_16 while Kevlar® reinforced compressionless brake

while Kevlar® reinforced compressionless brake housing delivers smooth

it resists to ripping

Great retention capabilities

Shimano has used both types

Shimano Acera RD-M3020-8 SGS Long Cage Rear Derailleur for 7/8 Speed Size_16 while Kevlar® reinforced compressionless brakeSHIMANO 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