Components Rear derailleurs MTB 10-11-12 speed Shimano Deore RD-M4120 Shadow rear derailleur, 2x11, super long cage, OEM package

Shimano

Shimano Deore RD-M4120 Shadow rear derailleur, 2x11, super long cage, OEM package

Name: Shimano Deore RD-M4120 Shadow rear derailleur, 2x11, super long cage, OEM package
Price: 24.9 EUR
Availability: LimitedAvailability
Rating: 5 (2 reviews)

5/5 (2 ratings)

Availability

24.90 €

RRP 30.90 €

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In-store pickup

From 30.01.2026 (Friday) Check availability

By courier to your home Express courier delivery GLS

Delivery method on Monday 02.02.2026

At collection points

Delivery method on Monday 02.02.2026

Extended return option up to 100 days More info

Other product variants

Shimano Deore RD-M4120-SGS derailleur, 11-speed(OEM) 29.99 €

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Product description

Shimano Deore RD-M4120 Shadow rear derailleur

Low-profile design of the Shadow RD derailleur. Designed for a combination of 2x10 and 2x11 gears with a cassette with max. number of teeth 11-42.

Product features

Long cage - SGS

Product details

Groupset	Shimano Deore
Gears	2x11
Control type	mechanical
Maximum range	11-42 teeth
Technical designation	RD-M4120-SGS
Capacity	41 teeth
Min./max. large pinion size	42T/42T
Min./max. small pinion size	11T/11T
Technology	Shadow RD
Weight	294 g
product ID	327409
EAN

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Warnings and instructions

WARNING
For information about installing, adjusting, and replacing products that are not found in the user's manual, consult the place of purchase or a distributor. A dealer's manual intended for professional and experienced bicycle mechanics is available on our website (https://si.shimano.com).
For safety, be sure to read this “user's manual” thoroughly before use, follow it for correct use, and save it so that you can refer to it at any time.
The following instructions should always be followed in order to prevent personal injury and physical damage to equipment and the surroundings. The instructions are classified according to the degree of danger or damage that 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 the surroundings.

WARNING
- Do not disassemble or modify the product. This may cause the product to malfunction, you may fall unexpectedly and be seriously injured.
- Never use alkali or acid-based solvents such as rust removers. If a solvent is used, the chain may break and cause serious injury.
- Clean the chain regularly with a suitable chain cleaner. Maintenance intervals depend on the circumstances of use and riding.
- Check that the chain is not damaged (deformation or cracking), does not skip or show any other irregularities, such as arbitrary shifting. If any problems occur, contact the place of purchase or a distributor. The chain may break and you may fall.

MTB 10-11-12 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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