Components Rear derailleurs MTB 7-8-9 speed Shimano Acera M3020 rear derailleur, 7/8-speed, super long cage (SGS)

Shimano

Shimano Acera M3020 rear derailleur, 7/8-speed, super long cage (SGS)

Name: Shimano Acera M3020 rear derailleur, 7/8-speed, super long cage (SGS)
Price: 15.59 EUR
Availability: InStock
Rating: 4.9 (32 reviews)

4.94/5 (32 ratings)

Availability

15.59 €

RRP 33.99 €

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In-store pickup

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By courier to your home Express courier delivery GLS

Delivery method on Wednesday 28.01.2026

At collection points

Delivery method on Wednesday 28.01.2026

Extended return option up to 100 days More info

Other product variants

Shimano Acera RD-M3020-SGS derailleur, 8-speed, OEM 21.99 €

Rating (32)

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4,9/5

Product description

Shimano Acera M3020 derailleur

SHIMANO ACERA M3020 rear derailleur with Double Servo technology for precise shifting with a wide range.

Product features

Derailleur capacity: 45 teeth
For a cassette with the largest pinion of 40 teeth

Product details

Groupset	Shimano Acera
Gears	1x8, 2x8, 3x8, 1x7, 2x7, 3x7
Cage type	SGS super long cage
Mounting type	direct screw mounting
Range	45 teeth
Max. pinion size	40 teeth
Material	aluminium, steel
Weight	332 g
product ID	183116
EAN

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Warnings and instructions

WARNING
For assistance with installation, adjustment and replacement of the products which are not found in the user's manual, please contact the place of purchase or a distributor. A dealer's manual for professional and experienced bicycle mechanics is available on our website (https://si.shimano.com).
For safety, be sure to carefully read this "user's manual" before use, follow it for correct use, and save it so that you can refer back to it at any time.
The following instructions must be always followed in order to prevent personal injury, physical damage to equipment and the surroundings. The instructions are classified according to the degree of danger or damage which may occur if the product is used incorrectly.
DANGER - Failure to follow the instructions will result in death or serious injury.
WARNING - Failure to follow the instructions could result in death or serious injury.
CAUTION - Failure to follow the instructions could result in personal injury, or physical damage to equipment and surroundings.

WARNING
- Do not disassemble or modify the product. It may cause the product to not operate correctly, and you may unexpectedly fall and be seriously injured.
- Never use alkali or acid-based solvents such as rust removers. If such a solvent is used, the chain may break and cause serious injury.
- Clean the chain regularly with an appropriate chain cleaner. The maintenance intervals depend on the circumstances of use and riding.
- Check that the chain is not damaged (deformation or cracking), skipping, or exhibiting any other anomalies such as arbitrary gear shifting. If any problems are found, consult the place of purchase or a distributor. The chain may break and you may fall.

MTB 7-8-9 speed Shimano

Japanese manufacturer produces road, mountain, gravel, trekking, BMX and e-bike groupsets. They also offer a whole series of components and apparel. Their range goes from wheels, footwear, eyewear to backpacks. Shimano is a traditional manufacturer known for their quality work, which is why they are the favourite choice of amateurs and professionals.

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