The SHIMANO ACERA M3020-8 rear derailleur with Double Servo technology helps you ride challenging terrain with fewer interruptions.

Double Servo rear derailleur with smooth, precise shifting performance and wide-range capability. Versatile performance and wide compatibility

FEATURES: 

Acera mountain bike rear derailleur with light action operation and over-size pulleys for a wide gear choice.

• Oversize 13-tooth tension and guide pulleys to reduce noise and wear
• Extension spring and low-friction fluorine-coated link pivot bushing result in a light shifting action
• Top normal spring for use with Rapidfire shifters
• IG and HG chain, 7 and 8-speed compatible
• Colour: Black
• Total capacity: 45T
• Max. low sprocket: 40T
• Double Servo construction for smooth and precise shifting

Click here for a compatible chain: Shimano CN-HG71 6/7/8 Speed Chain with Quick Link, 116 Links

Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist.