--- product_id: 434505662 title: "Deore Rd-M5120 Rear Derailleur" brand: "shimano" price: "₱7473" currency: PHP in_stock: true reviews_count: 13 category: "Shimano" url: https://www.desertcart.ph/products/434505662-deore-rd-m5120-rear-derailleur store_origin: PH region: Philippines --- # Aluminum lightweight build 41t max capacity 2x11 & 1x10 speed compatible Deore Rd-M5120 Rear Derailleur **Brand:** shimano **Price:** ₱7473 **Availability:** ✅ In Stock ## Summary > 🚵‍♂️ Shift Like a Pro, Ride Like a Legend ## Quick Answers - **What is this?** Deore Rd-M5120 Rear Derailleur by shimano - **How much does it cost?** ₱7473 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/434505662-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 - • **Low-Profile Armor:** Sleek design minimizes damage risk from rocks and obstacles, so you stay trail-ready and worry-free. - • **Lightweight Durability:** Crafted from premium aluminum for a perfect balance of strength and weight savings. - • **Chain Stability Mastery:** Advanced clutch system virtually eliminates chain slap and drop, keeping your ride quiet and efficient. - • **Wide Gear Compatibility:** Supports 2x11, 2x10, and 1x10 setups with up to 42t cassette range for versatile MTB performance. - • **Rock-Solid Shifting Precision:** SHIMANO SHADOW RD+ tech ensures smooth, reliable gear changes even on the roughest trails. ## Overview The Shimano Deore RD-M5120 Rear Derailleur combines lightweight aluminum construction with SHIMANO's Shadow RD+ clutch technology to deliver precise, quiet shifting across 10 and 11-speed MTB drivetrains. Designed for durability and chain stability, it supports up to 42t cassette ranges and features a low-profile design that protects against trail hazards, making it a top choice for serious mountain bikers seeking reliable performance. ## Description Utilizing the SHIMANO SHADOW RD+ design, the SHIMANO DEORE M5120 rear derailleur delivers consistent MTB shifting performance over rough terrain. The low profile design avoids damage from rocks whiles SHIMANO's chain stabilizing technology reduces chain drop and makes for a quiet drivetrain in all gear positions. Review: Well worth it - This thing exceeded my expectations. I was upgrading my mountain bike from a 3X9 to a 2X11. The clutch feature is awesome. I have not had a single chain slap or chain disengagement from the chain rings. It keeps good tension on the chain to prevent both of those situations. However,I did have to adjust the clutch out of the box, because it was set too tight from the manufacturer. Once I learned how to do it it was fairly simple. You can find out how to do it on YouTube. Like I said, though this is far exceeded my expectations: it shifts cleanly, and the clutch feature (I didn’t even know was a thing) was a nice surprise. Review: good - excellent shifting ## 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 | #54,827 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #17 in Rear Bike Derailleurs | | Brand | SHIMANO | | Brand Name | SHIMANO | | Case Material Type | Aluminium | | Color | Black | | Customer Reviews | 4.6 out of 5 stars 239 Reviews | | Included Components | Rear Derailleur | | Item Dimensions L x W x H | 8"L x 5"W x 4"H | | Item Highlight | Deore M5120 Rear Derailleur - 10/11-Speed MTB, Shadow RD+ | | Item Weight | 203 g | | Manufacturer | Shimano | | Manufacturer Part Number | ERDM5120SGS | | Material | Aluminum | | Material Type | Aluminum | | Model Number | Shimano | | Mount Type | Braze-On Mount | | Mounting Type | Braze-On Mount | | Number of Items | 1 | | Number of Teeth | 42 | | Product Dimensions | 8"L x 5"W x 4"H | | UPC | 192790618548 | | Unit Count | 1 Count | | Warranty Description | Limited Warranty | ## Product Details - **Brand:** SHIMANO - **Color:** Black - **Item Weight:** 203 Grams - **Material:** Aluminum - **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 ### ⭐⭐⭐⭐⭐ Well worth it *by L***C on September 10, 2025* This thing exceeded my expectations. I was upgrading my mountain bike from a 3X9 to a 2X11. The clutch feature is awesome. I have not had a single chain slap or chain disengagement from the chain rings. It keeps good tension on the chain to prevent both of those situations. However,I did have to adjust the clutch out of the box, because it was set too tight from the manufacturer. Once I learned how to do it it was fairly simple. You can find out how to do it on YouTube. Like I said, though this is far exceeded my expectations: it shifts cleanly, and the clutch feature (I didn’t even know was a thing) was a nice surprise. ### ⭐⭐⭐⭐⭐ good *by K***N on July 4, 2026* excellent shifting ### ⭐⭐⭐⭐⭐ Perfect for my restoration project *by C***S on July 13, 2024* I put this on my vintage GT mountain bike as part of an updated 1x drivetrain. Works great! It shifts perfectly with very easy set up. Don’t make the mistake I did… I first tried to pair it with a 11-48 cassette but quickly realized it wouldn’t work, looked closer at the description, and saw that it maxes out with a 46t gear. No big deal though. Got an appropriate cassette and it all came together perfectly. ## 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.ph/products/434505662-deore-rd-m5120-rear-derailleur](https://www.desertcart.ph/products/434505662-deore-rd-m5120-rear-derailleur) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-09-20*