--- product_id: 463153454 title: "Shimano Deore Rd-M5120 Rear Derailleur" brand: "shimano" price: "S$88" currency: SGD in_stock: true reviews_count: 5 category: "Shimano" url: https://www.desertcart.sg/products/463153454-shimano-deore-rd-m5120-rear-derailleur store_origin: SG region: Singapore --- # SGS long cage fits up to 46T cassette 10/11-speed compatibility Shadow RD+ clutch for chain stability Shimano Deore Rd-M5120 Rear Derailleur **Brand:** shimano **Price:** S$88 **Availability:** βœ… In Stock ## Summary > πŸš΅β€β™‚οΈ Shift Like a Pro, Ride Like a Legend ## Quick Answers - **What is this?** Shimano Deore Rd-M5120 Rear Derailleur by shimano - **How much does it cost?** S$88 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/463153454-shimano-deore-rd-m5120-rear-derailleur) ## Best For - shimano enthusiasts ## Why This Product - Trusted shimano brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Low-Profile Durability:** Compact body reduces impact damage risk on rocky, technical trailsβ€”built to endure your toughest rides. - β€’ **Chain Security Champion:** Shadow RD+ clutch technology eliminates chain slap and drop, keeping your ride smooth and silent. - β€’ **Extended Gear Range Ready:** SGS long cage design supports cassettes up to 46T, unlocking versatile terrain conquering power. - β€’ **Trusted Deore Performance:** Aluminum construction delivers reliable, consistent shifting that serious mountain bikers demand. - β€’ **Precision Shifting Mastery:** Seamlessly shifts across 10 & 11-speed MTB drivetrains for ultimate trail control. ## Overview The Shimano Deore RD-M5120 Rear Derailleur is a high-performance 10/11-speed MTB component featuring Shadow RD+ clutch technology for chain stability, an SGS long cage accommodating up to 46T cassettes, and a low-profile design to minimize impact damage. Crafted from durable aluminum, it ensures precise, reliable shifting on demanding trail rides. ## Description The Shimano RD-M5120 Deore 10/11-Speed Rear Derailleur combines Shadow RD+ chain stabilization with a long SGS cage for reliable, chain-secure shifting on trail MTB drivetrains. The clutch mechanism eliminates chain slap on rough terrain while the long cage handles cassettes up to 46T for broad gear range coverage. Shadow RD's low-profile design minimizes impact risk on technical trail surfaces. Review: good - excellent shifting Review: Information - Easy to install , clutch is a useful feature. When set up properly the chain stays where it belongs at all times . ## Features - DEORE 10/11-SPEED DERAILLEUR – Reliable Shimano Deore rear derailleur for 10 & 11-speed MTB drivetrains with Shadow RD+ chain stabilization. - SHADOW RD+ CLUTCH – Integrated chain stabilizer clutch reduces chain slap & drop on rough trail terrain for quiet, secure chain running. - SGS LONG CAGE – Extended cage accommodates cassettes up to 46T for maximum gear range coverage in 1x10 & 1x11 MTB drivetrains. - LOW PROFILE DESIGN – Shadow RD's compact body reduces the risk of impact damage on technical trail terrain & rocky MTB surfaces. - DEORE MTB PERFORMANCE – Deore-grade construction delivers reliable, consistent shifting for trail & recreational mountain biking. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B089KDV5C7 | | Best Sellers Rank | #92,805 in Sporting Goods ( See Top 100 in Sporting Goods ) #46 in Bike Rear DΓ©railleurs | | Brand | SHIMANO | | Brand Name | SHIMANO | | Case Material Type | Aluminum | | Color | Black | | Colour | Black | | Customer Reviews | 4.7 out of 5 stars 219 Reviews | | Included Components | 1 x Shimano Deore RD-M5120-SGS 10/11 Speed Rear Derailleur, Black | | Item Dimensions L x W x H | 20.3L x 12.7W x 10.2H centimeters | | Item Type Name | Rear Derailleur | | Item Weight | 203 Grams | | Item weight | 203 Grams | | Manufacturer | Shimano Inc. | | Manufacturer Part Number | ERDM5120SGS | | Material | Aluminum | | Material Type | Aluminum | | Model Number | Shimano | | Mount Type | Braze-On Mount | | Mounting type | Braze-On Mount | | Number of Teeth | 42 | | Product dimensions | 20.3L x 12.7W x 10.2H centimeters | | UPC | 192790618548 | | Warranty Description | No Warranty | ## Product Details - **Brand:** SHIMANO - **Colour:** Black - **Item weight:** 203 Grams - **Material:** Aluminum - **Mounting type:** Braze-On Mount ## Images ![Shimano Deore Rd-M5120 Rear Derailleur - Image 1](https://m.media-amazon.com/images/I/61a1EK2nXzL.jpg) ## Questions & Answers **Q: I have an older mtn bike with a 10speed deore. Can I run this derailleur with my current shimano 10sp shifter? The shimano deore sl-m610?** A: I believe that Shimano's 10 spd mtn shifters are pretty much the same, regardless of the year. I'm using a 10 spd Zee shifter with it and it works fine. **Q: will this work on a 10 s road bike with 11x42 (rear)?** A: I honestly don't know, but it is designed for use with 42-46T cassettes as long as the shifter has the same pull ratio, theoretically it will work with both 10- and 11-speed shifters. Google says a mtb derailleur should work. **Q: Can i use this with my 9 speed shifter and 9 speed cassette?** A: Not out of the box. When Shimano went to 10 speed, they altered the shifter/derailleur pull. JTek may make a pulley that will allow you to do so, but you'll need to visit their website and pore through the compatibility charts there. If you find one, then you'll need to find a retailer that carries it. Honestly, it would be easier just to find a 9 speed derailleur unless you already have this derailleur and need to find a solution to get it to work. **Q: Will this fit a 11t-46t 10 speed cassette?** A: Yes it will. I just did mine ## Customer Reviews ### ⭐⭐⭐⭐⭐ good *by K***N on 4 July 2026* excellent shifting ### ⭐⭐⭐⭐⭐ Information *by J***E on 16 October 2025* Easy to install , clutch is a useful feature. When set up properly the chain stays where it belongs at all times . ### ⭐⭐⭐⭐⭐ Preciso e silenzioso *by B***N on 5 December 2025* Ottimo deragliatore preciso e silenzioso ## Frequently Bought Together - Shimano Deore Rd-M5120 Rear Derailleur - SHIMANO SL-M6000 Deore Shift Lever, Band-on, 10-Speed, Right Hand - Shimano Deore CS-M4100-10 Cassette - 10-Speed, 11-46t, Silver --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/463153454-shimano-deore-rd-m5120-rear-derailleur](https://www.desertcart.sg/products/463153454-shimano-deore-rd-m5120-rear-derailleur) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-07-16*