--- product_id: 158810962 title: "SHIMANO XT RD-M8100-SGS RD-M8120-SGS 12-Speed Rear Derailleur, Long Cage, Black" brand: "shimano" price: "835.57 DT" currency: TND in_stock: true reviews_count: 13 category: "Shimano" url: https://www.desertcart.tn/products/158810962-shimano-xt-rd-m8100-sgs-rd-m8120-sgs-12-speed store_origin: TN region: Tunisia --- # Shadow+ chain retention tech Durable sleek black alloy 12-speed precision shifting SHIMANO XT RD-M8100-SGS RD-M8120-SGS 12-Speed Rear Derailleur, Long Cage, Black **Brand:** shimano **Price:** 835.57 DT **Availability:** ✅ In Stock ## Summary > ⚙️ Shift into the future with Shimano XT – where precision meets power! ## Quick Answers - **What is this?** SHIMANO XT RD-M8100-SGS RD-M8120-SGS 12-Speed Rear Derailleur, Long Cage, Black by shimano - **How much does it cost?** 835.57 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/158810962-shimano-xt-rd-m8100-sgs-rd-m8120-sgs-12-speed) ## 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 - • **Shadow+ Stability:** Ride with confidence—advanced Shadow+ design keeps your chain locked in place, eliminating chain drops. - • **Premium Alloy Build:** Lightweight yet robust alloy steel construction ensures durability without weighing you down. - • **Long Cage Versatility:** Accommodates wide-range cassettes for ultimate trail adaptability and single chainring setups. - • **Iconic Shimano Quality:** Backed by a trusted brand with a 1-year warranty, delivering consistent performance ride after ride. - • **Effortless 12-Speed Shifting:** Experience flawless gear changes with Shimano’s cutting-edge 12-speed drivetrain technology. ## Overview The Shimano Deore XT RD-M8100-SGS is a high-performance 12-speed long cage rear derailleur engineered for mountain biking. Featuring Shadow+ technology for superior chain retention and quiet operation, it supports single chainring setups and wide-range cassettes. Crafted from durable alloy steel with a sleek black finish, it offers reliable, precise shifting backed by Shimano’s renowned quality and a 1-year warranty. ## Description Product Description The Shimano Deore XT RD-M8100 rear derailleur delivers precise and reliable 12-speed shifting for your mountain bike. Designed with Shimano's Shadow+ technology for enhanced chain retention and quiet operation, this derailleur is ideal for single chainring setups. The SGS long cage accommodates a wide range of cassettes. Durable construction and Shimano quality ensure long-lasting performance. Features a sleek black finish and includes Shimano Deore XT components. Legal Disclaimer 4 B---4 A----2009906(012 089)9/27 #52920:5e :6/5eta #60120s:10e:6/23ari,6/25:17ari 6/29:3ari---1 rtn---7/20-----1: rtn 9/24----1 RTN ON 10/15----1: on 10/19 102620S(10e:12/19b/o=3/16ar 101421(5: 5/2022 Review: Perfect - It came Shimano boxed and plastic wrapped in brand new perfect condition, as expected. Review: Deore xt M8100 - Genuine Shimano product!! ## Features - Warning:To prevent possible injury by entanglement, remove this toy when the child starts trying to get up on its hands and knees in a crawling position - Deore XT RD-M8100 12-speed rear derailleur for precise gear shifting - Shimano brand ensures quality and performance - Shadow+ design for stable chain retention - Suitable for single chainring setups ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07SWQZB46 | | Best Sellers Rank | 34,815 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 32 in Bike Rear Dérailleurs | | Brand | SHIMANO | | Brand Name | SHIMANO | | Case Material Type | Alloy Steel | | Colour | Black | | Country Of Origin | Japan | | Customer Reviews | 4.7 out of 5 stars 580 Reviews | | Global Trade Identification Number | 04550170443641 | | Included Components | Shimano Deore XT | | Item Dimensions L x W x H | 17.8L x 17.8W x 12.7H centimetres | | Item Type Name | Brakes & Shifters | | Item Weight | 200 Grams | | Item weight | 200 Grams | | League | Shimano | | League Name | Shimano | | Manufacturer | Shimano Deore XT | | Manufacturer Part Number | 587830 | | Manufacturer Warranty Description | 1 year manufacturer | | Material | Other | | Material Type | Other | | Model Number | 587830 | | Mount Type | Clamp-On Mount | | Mounting type | Clamp-On Mount | | Number of Teeth | 26 | | UPC | 192790443645 | ## Product Details - **Brand:** SHIMANO - **Colour:** Black - **Item weight:** 200 Grams - **League:** Shimano - **Material:** Other ## Images ![SHIMANO XT RD-M8100-SGS RD-M8120-SGS 12-Speed Rear Derailleur, Long Cage, Black - Image 1](https://m.media-amazon.com/images/I/51K46DNzSPL.jpg) ![SHIMANO XT RD-M8100-SGS RD-M8120-SGS 12-Speed Rear Derailleur, Long Cage, Black - Image 2](https://m.media-amazon.com/images/I/51IwDQXeFdL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect *by A***R on 8 June 2026* It came Shimano boxed and plastic wrapped in brand new perfect condition, as expected. ### ⭐⭐⭐⭐⭐ Deore xt M8100 *by T***. on 20 May 2026* Genuine Shimano product!! ### ⭐⭐⭐⭐⭐ Well worth the Upgarde *by M***S on 6 October 2024* Upgraded from Sram XS system to this Shimano XT RD-M8100-SGS RD-M8120-SGS 12-Speed Rear Derailleur, Long Cage also with Shimano XT8100 shifter and just wow so much smoother this is when changing gears and it just works straight out the box when fitted a little adjustment was needed but not as much with the Sram. Well worth the upgrade ## Frequently Bought Together - SHIMANO XT RD-M8100-SGS RD-M8120-SGS 12-Speed Rear Derailleur, Long Cage, Black - Shimano XT SL-M8100-L Right Clamp-Band 12-Speed Shifter, Black - SHIMANO Xt Cs-M8100 12-Speed Cassette --- ## 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.tn/products/158810962-shimano-xt-rd-m8100-sgs-rd-m8120-sgs-12-speed](https://www.desertcart.tn/products/158810962-shimano-xt-rd-m8100-sgs-rd-m8120-sgs-12-speed) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-11*