Shimano Sora R3000 9-speed rear derailleur, medium cage – ERDR3000GS

(20 reviews)

Compatible with up to 34 teeth.

I choose my options

Rear derailleur clevis

Speed compatibility

Transmission type

Ref : 1850626

€34.50

Price : €47.99

In stock

Quantity

Based on 20 reviews

Show reviews

Shimano Sora R3000 9-speed rear derailleur, medium cage – ERDR3000GS

More details In stock

Shimano Sora R3000 9-speed rear derailleur, medium cage – ERDR3000GS

€34.50

Also available in store

Notre avis

A modernised look in line with the Tiagra 4700 and Ultegra 6800.

Sylvain C.

Mechanical expert

Shimano ’s Sora R3000 GS rear derailleur (part number ERDR3000GS) is designed for road and touring cyclists looking for a reliable, precise and durable drivetrain offering excellent value for money. Part of the Sora 9-speed range, it offers smooth and consistent gear changes, even under load, thanks to its robust design and compatibility with Shimano HG 9-speed drivetrains.

Its medium cage (GS) accommodates cassettes of up to 34 teeth, offering a wider gear range to tackle hilly routes, long training rides or cycle tours. With a total capacity of 43 teeth, it is an excellent choice for endurance, fitness and trekking road bikes fitted with a 2x9-speed drivetrain.

The Sora RD-R3000-GS Shimano features a wide parallelogram design that improves overall stiffness and optimises gear-changing precision. Its 11-tooth pulleys help to reduce operating noise and chain wear, ensuring a quieter and more durable drivetrain.

Key features

Compatible with Shimano 9-speed drivetrains.
Chape GS middle sprocket suitable for cassettes up to 34 teeth.
Total capacity of 43 teeth.
Precise and smooth gear changes.
Rigid construction for improved precision.
11-tooth pulleys to minimise noise and wear.
Excellent balance between performance, reliability and price.

FAQ

Is this derailleur compatible with all Shimano 9-speed drivetrains?

Yes, the Shimano Sora RD-R3000-GS is designed to work with 9-speed Shimano s using a 9-speed HG chain.

What is the difference between a GS cage and an SS cage?

The GS version (medium cage) accommodates larger cassettes, up to 34 teeth, whilst the SS version (short cage) is limited to more compact gear ratios.

Can this derailleur be used for cycle touring?

Yes, its 43-tooth capacity and compatibility with cassettes up to 11-34 teeth make it an ideal solution for hilly routes and cycle tours.

Is the derailleur easy to adjust?

Yes, it features a built-in cable tensioner that allows for precise adjustment of the indexing to ensure optimal gear changes.

Our team suggests

Our customers, our best ambassadors

Show attestation

Reviews subject to control

1★

2★

3★

4★

5★

9.6/10

Based on 20 reviews

Alain b.
Published Sep 24, 2026 at 06:56 pm (Order date: Sep 09, 2026)

5

Everything is ok (Translated review)
Fabrice L.
Published Sep 29, 2025 at 09:08 pm

5

Very good product, fast delivery times (Translated review)
James C.
Published Jul 20, 2024 at 05:09 pm

5

Impeccable quality-price ratio. I just put it on my old trex 9v. no noise. I just did 2 outings in the Alps with, col de roselend and col des saisies. (Translated review)
Xavier S.
Published Dec 11, 2023 at 11:45 pm

4

Breathe quality, high-end look (Translated review)
Gilles P.
Published Oct 12, 2022 at 10:23 pm

5

good derailleur, solid and precise for 9 speeds (Translated review)
Patrice A.
Published Oct 11, 2022 at 07:08 pm

5

Well-finished derailleur, works well. Allows switching to a 34 cassette. Well-finished and nice in black. (Translated review)
Roger p.
Published Sep 28, 2022 at 06:45 pm

5

Very satisfied, the material meets my expectations, I recommend (Translated review)
Sebastien D.
Published Aug 25, 2022 at 01:29 pm

5

Good mid-range derailleur. Does the job cool. Impeccable. (Translated review)
Sebastien v.
Published Jul 08, 2022 at 12:10 pm

5

Very happy with the derailleur, the gear shifting is smoother and more fluid. (Translated review)
Alain n.
Published Jan 18, 2022 at 11:46 am

5

Good advice on the phone, competitive prices, extremely short delivery times, in short, it's all good. However, the derailleur is not yet mounted, but I'm not worried. Trust it. (Translated review)