--- product_id: 347740215 title: "XT RD-M8100-SGS RD-M8120-SGS 12-Speed Rear Derailleur, Long Cage, Black" brand: "shimano" price: "715.86 DT" currency: TND in_stock: true reviews_count: 5 category: "Shimano" url: https://www.desertcart.tn/products/347740215-xt-rd-m8100-sgs-rd-m8120-sgs-12-speed-rear store_origin: TN region: Tunisia --- # Silent drivetrain with rubber bumper 12-speed precision shifting Optimized for rough terrain stability XT RD-M8100-SGS RD-M8120-SGS 12-Speed Rear Derailleur, Long Cage, Black **Brand:** shimano **Price:** 715.86 DT **Availability:** ✅ In Stock ## Summary > ⚙️ Shift like a pro, ride like a legend. ## Quick Answers - **What is this?** XT RD-M8100-SGS RD-M8120-SGS 12-Speed Rear Derailleur, Long Cage, Black by shimano - **How much does it cost?** 715.86 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/347740215-xt-rd-m8100-sgs-rd-m8120-sgs-12-speed-rear) ## 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 - • **Maximum Gear Range:** Handles up to 51T sprockets with 41T capacity for conquering the steepest climbs effortlessly. - • **Whisper-Quiet Ride:** Rubber bumper and chain stabilizer reduce noise and chain bounce for a stealthy, smooth ride. - • **Trail-Ready Durability:** Cold-forged alloy links and sealed 13T bearing pulleys ensure long-lasting performance under pressure. - • **Effortless 12-Speed Shifting:** Experience lightning-fast, shockless gear changes that keep you ahead on every trail. - • **Optimized Low Profile Design:** Sleek, compact build minimizes snagging and maximizes clearance on technical terrain. ## Overview The Shimano XT RD-M8100-SGS is a high-performance 12-speed long cage rear derailleur engineered for precise, silent shifting on demanding trails. Featuring a low-profile design, 13T sealed bearing pulleys, and a chain stabilizer switch, it delivers smooth, efficient gear changes while minimizing chain bounce and noise. Built with durable cold-forged alloy components and optimized for 1x drivetrains, it supports up to a 51T sprocket and weighs just 284g, making it the ultimate upgrade for serious mountain bikers. ## Description XT Shadow plus 12-speed rear derailleur for fast and precise shifting performance optimized to take on any trailShadow plus features a super low profile design and optimized slant angle for super light shifting actionShadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive and shiftingSingle tension spring prevents contact with the chainstay resulting in a silent rideRubber bumper on pulley cage for added silent drive13T pulleys and decreased derailleur tension prevent high chain tension in low gearsDirect cable routing prevents snagging from any trail side hazardsCold forged wide alloy links and pivot bodyFour fluorine-coated link pin bushingsStrong return spring for a positive shifting feelSpecifically designed to work with 12-speed 1x drivetrainsDurable sealed 13T bearing pulleys for low frictionTop normal spring uses the spring to select higher gearsMax low sprocket: 51T (1x 12-speed)41T capacity SGS cageAverage weight 284g Review: Cambio XT - Ciò che cercavo ad un prezzo competitivo, per il resto la solita ottima qualità Shimano Review: Calidad - El producto llego como lo espectaba, ya había utilizado esta calidad de desviador y por este motivo lo volví a comprar. ## Features - Fast, shockless shifting and low-profile design. - Large 13T pulleys increase efficiency. - Decreased tension in low gear and added bumper improve drivetrain silence. - 12-speed rear. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07SWQZB46 | | Best Sellers Rank | #63,531 in Sporting Goods ( See Top 100 in Sporting Goods ) #7 in Bike Front Dérailleurs | | Brand | SHIMANO | | Brand Name | SHIMANO | | Case Material Type | Aluminum | | Color | Black | | Colour | Black | | Customer Reviews | 4.7 out of 5 stars 554 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 centimeters | | 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 | | Material | Other | | Material Type | Other | | Model Number | 587830 | | Mount Type | Braze-On Mount | | Mounting type | Braze-On Mount | | Number of Teeth | 26 | | UPC | 192790443645 | ## Product Details - **Brand:** SHIMANO - **Colour:** Black - **Item weight:** 200 Grams - **League:** Shimano - **Material:** Other ## Images ![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) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Cambio XT *by A***O on 16 November 2025* Ciò che cercavo ad un prezzo competitivo, per il resto la solita ottima qualità Shimano ### ⭐⭐⭐⭐⭐ Calidad *by S***O on 24 November 2025* El producto llego como lo espectaba, ya había utilizado esta calidad de desviador y por este motivo lo volví a comprar. ### ⭐⭐⭐⭐⭐ エンドアジャストボルトの調整も忘れんな（笑） *by ザ***プ on 7 June 2026* 確実な変速するけど 一番大事なのは調整です エンドアジャストボルトの調整もしっかりしないとちゃんと走る自転車にはならない 付け替えるのは簡単です ## 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/347740215-xt-rd-m8100-sgs-rd-m8120-sgs-12-speed-rear](https://www.desertcart.tn/products/347740215-xt-rd-m8100-sgs-rd-m8120-sgs-12-speed-rear) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-11*