SHIMANO,ERDM5120SGS Deore Deore M5120 rear derailleur, 10/11-speed, Shadow+, SGS long cage, Black

NEW Shimano Deore RD-M5120 Rear Derailleur 10/11-Speed Black

4.8 (127)
Used Offers from £48.92

SHIMANO,ERDM5120SGS Deore Deore M5120 rear derailleur, 10/11-speed, Shadow+, SGS long cage, Black

Overall Rating: 2.3 / 5 (average from multiple review sources, as of 18 Oct 2026)
Based on a total of 48,210 customer reviews from independent review platforms.

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£29.49
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Shimano Deore M5120 Shadow Rd+ Direct Rear Derailleur Black 11s / Max 41t 11s Black

Overall Rating: 3.9 / 5 (average from multiple review sources, as of 18 Oct 2026)
Based on a total of 43,251 customer reviews from independent review platforms.

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The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

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1 working day(s)
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£29.99
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Shimano Deore M5120 10/11-speed Shadow design+ Rear Derailleur

Overall Rating: 4.5 / 5 (average from multiple review sources, as of 19 Oct 2026)
Based on a total of 97,980 customer reviews from independent review platforms.

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The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

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2 to 3 days
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£32.99
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Shimano Deore M5120 10/11 Speed Shadow+ Rear Mech

Overall Rating: 1.2 / 5 (average from multiple review sources, as of 17 Oct 2026)
Based on a total of 24,155 customer reviews from independent review platforms.

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The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

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Will usually delivered within 2 - 3 working days of receiving cleared payment.
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£33.44
Delivery from £2.99

Shimano Deore Deore M5120 rear derailleur, 10/11-speed, SGS long cage

Overall Rating: 1.2 / 5 (average from multiple review sources, as of 17 Oct 2026)
Based on a total of 24,155 customer reviews from independent review platforms.

Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

All brand names and logos are the property of their respective owners.

Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Will usually delivered within 2 - 4 working days of receiving cleared payment.
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£33.59
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Shimano Deore Deore M5120 rear derailleur - 10/11-speed - Shadow+ - SG

Overall Rating: 3.5 / 5 (average from multiple review sources, as of 6 Oct 2026)
Based on a total of 4,581 customer reviews from independent review platforms.

Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

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pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
1-3 working days
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£39.99
Delivery from £3.95

Shimano Deore M5120 10/11 Speed Shadow Plus Rear Derailleur - SGS Long Cage

Overall Rating: 1.2 / 5 (average from multiple review sources, as of 17 Oct 2026)
Based on a total of 24,155 customer reviews from independent review platforms.

Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

All brand names and logos are the property of their respective owners.

Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Will usually delivered within 2 - 5 working days of receiving cleared payment.
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£49.99
Free Delivery

Shimano Deore M5120 Rear Derailleur BLACK

Overall Rating: 4.9 / 5 (average from multiple review sources, as of 18 Oct 2026)
Based on a total of 11,685 customer reviews from independent review platforms.

Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

All brand names and logos are the property of their respective owners.

Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
2-4 working days
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£49.99
Free Delivery

Shimano Deore M5120 10/11 Speed Shadow Plus Rear Derailleur - SGS Long Cage

Overall Rating: 1.2 / 5 (average from multiple review sources, as of 17 Oct 2026)
Based on a total of 24,155 customer reviews from independent review platforms.

Sources & Transparency:
The values are derived from publicly available retailer ratings from platforms such as Feefo, http://Reviews.io , Trustpilot, and others, and are aggregated monthly.

All brand names and logos are the property of their respective owners.

Notice:
pricehunter.co.uk cannot guarantee that published shop ratings originate from consumers who have actually made a purchase from the reviewed retailer.
Will usually delivered within 2 - 7 working days of receiving cleared payment.
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£49.99
Free Delivery
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SHIMANO,ERDM5120SGS Deore Deore M5120 rear derailleur, 10/11-speed, Shadow+, SGS long cage, Black

Cheapest offer

Material: Other Quiet drive in all switching positions Flat design prevents impact damage from stones Reliable drive on the trail Department: unisex
£29.49
In stock
amazon.co.uk

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Product information

At a glance

  • Enhanced gear transitions for improved cycling performance
  • Durable design withstands rugged terrain challenges
  • Simple installation for quick bike upgrades

Note: This text was created with the help of AI.

Experience the Thrill of Precision with Shimano Deore RD-M5120

The Shimano Deore RD-M5120 is an exceptional choice for mountain biking enthusiasts and casual riders alike. If you’re looking to enhance your cycling experience with reliable and smooth gear shifting, this component is perfect for you. Its compatibility with both 10 and 11-speed systems makes it a versatile option, allowing you to enjoy seamless transitions on varied terrains. Whether you’re gearing up for a weekend adventure or just rolling around town, the Bike Gears will elevate your performance.

Unmatched Advantages and Functionality

This rear derailleur is engineered with precision and durability in mind, offering a host of benefits that are sure to impress. With its high-quality construction, the RD-M5120 guarantees smooth and reliable shifting under pressure. The unique design features a shadow mechanism that reduces the chance of damage from obstacles, making it ideal for rugged trails. Key features include:

  • Shadow RD+ technology for improved chain stability
  • Wide compatibility with various Shimano drive systems
  • Efficient gear shifting that enhances overall riding performance

A Design That Stands Out

The Shimano Deore RD-M5120 isn’t just about performance; it also boasts a sleek and modern design that complements any bike setup. Its compact profile keeps your bike looking sharp while ensuring it’s lightweight enough for all-day rides. The rugged finish not only looks great but also offers durability against the elements, giving you confidence to tackle any adventure. With its refined aesthetics, this derailleur is a fantastic addition to your biking gear.

Easy Installation for Instant Upgrades

Installation of the RD-M5120 is a breeze, making it an accessible upgrade for bike enthusiasts of all skill levels. You don’t need to be a mechanic to experience the benefits of this top-tier rear derailleur. With its user-friendly setup, you can easily enhance your bike’s performance in no time. So gear up and enjoy the ride, knowing that the Shimano Deore RD-M5120 has got your back with every shift!

Note: This text was created with the help of AI.

Pros and cons

Pros

  • Reliable and smooth shifting
  • Compatible with 10 and 11-speed
  • Durable shadow mechanism design
  • Easy installation for all riders

Cons

  • May not suit all riding styles
  • Best performance with Shimano systems

Note: This text was created with the help of AI.

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User reviews

Our reviews come from Trustami, a service that automatically collects, links, and verifies reviews from various sources such as Google, eBay, Amazon, and Trusted Shops. This gives users a transparent overview of a manufacturer's customer satisfaction.

4.8 out of 5 stars

127 Ratings
5 stars
107
4 stars
14
3 stars
3
2 stars
2
1 star
1
Amazon.it Customer

Perfect

via trustami

Amazon.de Customer

It fits perfectly and is described very well. I took it on holiday, drove 500 km with it without any problems.

via trustami

Amazon.it Customer

Excellent product, everything as described, very fast delivery. Thank you

via trustami

Amazon.nl Customer

The best I ever bought. Fits my bike enormously and love the whole design. It adjusts itself by itself without having to adjust the High- and Low-screws. High quality. Very happy and highly recommendable.

via trustami

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