--- product_id: 496760570 title: "Deore Rd-M5120 Rear Derailleur" brand: "shimano" price: "฿6024" currency: THB in_stock: true reviews_count: 5 category: "Shimano" url: https://www.desertcart.co.th/products/496760570-deore-rd-m5120-rear-derailleur store_origin: TH region: Thailand --- # Aluminum durable build 41t max cassette capacity Compatible with 10/11-speed HG-X cassettes Deore Rd-M5120 Rear Derailleur **Brand:** shimano **Price:** ฿6024 **Availability:** ✅ In Stock ## Summary > ⚙️ Shift into the future of flawless rides! ## Quick Answers - **What is this?** Deore Rd-M5120 Rear Derailleur by shimano - **How much does it cost?** ฿6024 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/496760570-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 - • **Effortless Installation:** Designed for quick, hassle-free setup so you can get back on the road faster and ride smoother. - • **Wide Gear Compatibility:** Supports 2x11, 2x10, and 1x10 setups with up to 46t cassette range—versatility for every trail and commute. - • **Clutch Stability Control:** Integrated clutch keeps your chain locked in place, eliminating chain drops and enhancing ride confidence. - • **Precision Shifting Mastery:** Experience ultra-smooth gear transitions with Shimano’s long cage design, perfect for complex chain paths. - • **Robust Aluminum Construction:** Lightweight yet tough aluminum body ensures durability without adding bulk to your ride. ## Overview The Shimano Deore RD-M5120 Rear Derailleur is a high-performance, aluminum-bodied component engineered for 10 and 11-speed drivetrains. With a maximum cassette capacity of 41t and compatibility up to 46t, it offers versatile gearing options. Its long cage design and clutch mechanism ensure smooth, stable shifting, making it ideal for demanding cycling setups and complex chain paths. ## Description SHIMANO Deore RD-M5120 Rear Derailleur SGS, 10/11 Speed : desertcart.co.uk: Sports & Outdoors Review: My recumbent requires a long cage shifter due to its long & convoluted chain path. This is a perfect replacement for the Shimano Dura Ace RD-7700, and a perfect mare to Shimano SL-BS77 Dura Ace Double/Triple Bar End Shifters. Simple to install, and very smooth shifting. Review: Easy to install , clutch is a useful feature. When set up properly the chain stays where it belongs at all times . ## Features - Material: aluminum - Capacity: 41t - Cassette Range: [2 x 11/10] 42t, [1 x 10] 46t - Gearing: [long] 2 x 11, 2 x 10, 1 x 10 - Compatibility: HG-X11 11-speed, HG-X 10-speed ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B089KDV5C7 | | Best Sellers Rank | 43,422 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 46 in Bike Rear Dérailleurs | | Brand Name | SHIMANO | | Case Material Type | Aluminium | | Colour | Black | | Country Of Origin | USA | | Customer Reviews | 4.7 4.7 out of 5 stars (206) | | Item Dimensions L x W x H | 20.3L x 12.7W x 10.2H centimetres | | Item Weight | 203 Grams | | Manufacturer | Shimano | | Manufacturer Part Number | ERDM5120SGS | | Material Type | Aluminium | | Model Number | Shimano | | Mount Type | Braze-On Mount | | Number of Teeth | 46 | | UPC | 192790618548 | | Unit Count | 1.0 count | ## Product Details - **Brand:** SHIMANO - **Colour:** Black - **Item weight:** 203 Grams - **Material:** Aluminium - **Mounting type:** Braze-On Mount ## Images ![Deore Rd-M5120 Rear Derailleur - Image 1](https://m.media-amazon.com/images/I/61a1EK2nXzL.jpg) ## Available Options This product comes in different **Color, Size** options. ## 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 ### ⭐⭐⭐⭐⭐ Review *by T***T on 6 September 2025* My recumbent requires a long cage shifter due to its long & convoluted chain path. This is a perfect replacement for the Shimano Dura Ace RD-7700, and a perfect mare to Shimano SL-BS77 Dura Ace Double/Triple Bar End Shifters. Simple to install, and very smooth shifting. ### ⭐⭐⭐⭐⭐ Review *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 . ### ⭐⭐⭐⭐⭐ Review *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? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/496760570-deore-rd-m5120-rear-derailleur](https://www.desertcart.co.th/products/496760570-deore-rd-m5120-rear-derailleur) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-23*