Shimano Acera RD-M3020-SGS Rear Derailleur 7/8-Speed, Long Cage, Black Max PSI_220 PSI The reinforcement zones at the

The reinforcement zones at the toes and heels provide added durability for demanding cycling conditions

durable replacement parts

and commuter setups that demand reliable security and discreet design

the collar allows for easy installation of rear racks

Shimano Acera RD-M3020-SGS Rear Derailleur 7/8-Speed, Long Cage, Black Max PSI_220 PSI The reinforcement zones at theThe Shimano Acera RD M3020 rear derailleur features Double Servo technology to provide smooth, precise shifting and helps you ride challenging terrain with fewer interruptions. Double Servo mechanism enables the rear derailleur to move in an optimum path Versatile performance and wide compatibility SGS Long cage