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Components > Drivetrain & Brakes > Derailleurs - Rear

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Black, 40t Max

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Description

The Shimano Acera RD-M3020 7/8-Speed Rear Derailleur offers light shifting operation and over-sized pulleys for a wider gear choice; compatible with 7- and 8-speed drivetrains.

Features:

Double Servo construction for smooth and precise shifting
Versatile performance and wide compatibility
Low sprocket: 30-40T
High sprocket: 11-12T
Total capacity: 45T

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

Specifications


Mfg PartNum: ERDM30208SGSL

Actuation: Mechanical

Mount Type: Standard Rear Hanger

Speed: 7/8

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shift smooth for lectric bike

by Jody

Cycling Enthusiast

Ohio

I bought this after the on on my lectric bike failed. such a big difference i shifting and so smooth for the price.

Reviewed 1/19/2023

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One of the most used 7-8 speed derailleurs

by KC cyclist

Cycling Enthusiast

Kansas City area

2 of 2 customers found this review helpful.

Better than the entry level Shimano derailleurs and performs well. Quite durable, especially for the price. Typically used on $450-600 bikes and many e-bikes costing much more. Been around for a long time.

Reviewed 8/6/2019

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Went on very easily and adjusted quickly.

by Mick

Cycling Enthusiast

Huntsville, AL

2 of 2 customers found this review helpful.

The tech I spoke with was very knowledgeable and helpful. He spoke bicycle. Tech made useful suggestions about the product to buy and best order to swap out parts.

Reviewed 6/21/2018

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