# Rear derailleur Shimano Deore RD-M5120-SGS for 10/11-speed drivetrains, SGS long cage

**URL:** https://aio.lv/en/product--shimano-erdm5120sgs--11395194
**Data updated:** 2026-03-17 09:05 (EET)
**Category:** Bicycle accessories
**Manufacturer:** Shimano
**Manufacturer code:** ERDM5120SGS
**EAN:** 4550170618544
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 40.99 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 33.88 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--shimano-erdm5120sgs--11395194

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.07.2026 | free |
| Pickup points | 22.07.2026 | 1.89 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

Shimano Deore RD-M5120-SGS rear derailleur compatible with 10- and 11-speed drivetrains. The SGS long-cage design supports wide-range cassettes and improves chain retention and shifting stability. Suitable for mountain and trekking bikes, it provides reliable gear changes, durable construction, and straightforward compatibility with Deore components.

## Long description

The Shimano Deore RD-M5120-SGS rear derailleur is designed for 10- and 11-speed drivetrains and features an SGS long-cage configuration to accommodate wide-range cassettes. Built to work with Deore-level components, this derailleur offers stable shifting performance, improved chain retention, and robust construction suitable for mountain and trekking bikes. Its geometry and spring tension are optimized for consistent gear changes across a broad range of sprockets.
Advantages
The long-cage SGS design ensures smoother chain management on wide-range setups and reduces chain slap on rough terrain. Precise pulley alignment and proven Shimano mechanics deliver reliable shifting under load, while durable materials and construction provide long service life with routine maintenance. Compatibility with 10- and 11-speed systems simplifies setup for riders using mixed-range drivetrains.
Suitable for
 Mountain bikes with wide-range cassettes
 Trekking and touring bikes that require dependable shifting
 Upgrades or replacements on 10- and 11-speed drivetrains
 Riders seeking improved chain retention and reduced chain drop
Key specifications
 Drivetrain compatibility: 10- and 11-speed systems
 Cage type: SGS long cage for wide-range cassette capacity
 Application: rear derailleur for mountain and trekking use
 Shifting orientation: right-side rear mounting for standard rear dropout
 Construction: metal and composite components engineered for durability
How to use
Mount the derailleur to the bike's rear hanger following the manufacturer's torque specifications and align it so the upper pulley sits directly beneath the smallest sprocket when shifted to the highest gear. Install and route the shift cable and housing according to standard Shimano routing practices, set the high and low limit screws to prevent overshift, and adjust cable tension with the barrel adjuster for crisp indexing across the cassette. Verify B-tension to ensure appropriate pulley-to-cog clearance when using large sprockets.
Usage recommendations
Regularly inspect and clean the derailleur, lubricate pivot points, and check cable condition to maintain shifting performance. When pairing with wide-range cassettes, confirm chain length and B-tension settings for reliable operation and reduced risk of chain drop.

## FAQ

### How much does the Shimano Deore RD-M5120-SGS rear derailleur cost, and is it available for purchase?

The price is 40.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 17.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Shimano products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Shimano service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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