SHIMANO ACERA Rear Derailleur 8-speed

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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.

Double Servo construction for smooth and precise shifting

Versatile performance and wide compatibility

Max. low sprocket: 40T

Total capacity: 45T

Compatible chain	HG 8/7/6-speed
Top-normal spring type\|Double servo	✔
Mount\|Direct attachment (conventional)	✔
Cable adjuster	✔
Max. front difference	20T
Total capacity	45T
Low sprocket\|Max.	40T
Low sprocket\|Min.	30T
Top sprocket\|Max.	12T
Top sprocket\|Min.	11T
Fluoric coated link bushings	1
Pulley\|Teeth	11T
Pulley\|Sunken type pulley screw	✔