--- product_id: 300020054 title: "Black,ERDM3100SGS Alivio Alivio M3100 rear derailleur, 9-speed, Shadow design, SGS long cage" brand: "shimano" price: "€ 77.94" currency: EUR in_stock: true category: "Shimano" url: https://www.desertcart.hr/products/300020054-black-erdm3100sgs-alivio-alivio-m3100-rear-derailleur-9-speed-shadow store_origin: HR region: Croatia --- # 9-speed optimized precision Durable off-road construction Long cage for wide gear range Black,ERDM3100SGS Alivio Alivio M3100 rear derailleur, 9-speed, Shadow design, SGS long cage **Brand:** shimano **Price:** € 77.94 **Availability:** ✅ In Stock ## Summary > ⚡ Shift like a pro, ride like a legend. ## Quick Answers - **What is this?** Black,ERDM3100SGS Alivio Alivio M3100 rear derailleur, 9-speed, Shadow design, SGS long cage by shimano - **How much does it cost?** € 77.94 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/300020054-black-erdm3100sgs-alivio-alivio-m3100-rear-derailleur-9-speed-shadow) ## 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 - • **Built to Endure:** Robust Shimano engineering ensures durability and consistent performance in rugged conditions. - • **Shadow Design Stealth:** Low-profile build reduces snag risks, keeping your ride smooth and uninterrupted. - • **Trail-Ready Long Cage:** Accommodates a broad gear range, perfect for conquering diverse terrains with ease. - • **Seamless 9-Speed Shifting:** Engineered for crisp, reliable gear changes that keep you ahead on every trail. - • **Universal MTB Compatibility:** Optimized for Shimano 9-speed drivetrains, ideal for mountain and trekking bikes alike. ## Overview The Shimano Alivio RD-M3100 SGS Rear Derailleur is a high-performance, 9-speed compatible component featuring a long cage design for wide gear range adaptability. Its Shadow design minimizes chain slap and snagging, while Shimano’s trusted engineering guarantees precise, durable shifting under demanding off-road conditions—perfect for serious mountain and trekking cyclists. ## Description The Shimano Alivio RD-M3100 SGS Rear Derailleur is a robust and reliable component for 9-speed mountain bike drivetrains. With a long cage design, it supports a wide gear range and delivers consistent shifting performance under tough trail conditions. Built with Shimano's trusted engineering, it ensures smooth and precise gear changes—ideal for recreational MTB riders and trekking cyclists alike. ## Features - OPTIMIZED FOR 9-SPEED SYSTEMS: Compatible with Shimano 9-speed drivetrains for mountain bikes. - LONG CAGE DESIGN: Accommodates a wide gear range, perfect for trail and trekking applications. - PRECISE SHIFTING: Engineered for crisp and accurate gear changes, even under load. - ROBUST CONSTRUCTION: Built for durability and reliability in off-road conditions. - SHIMANO QUALITY PERFORMANCE: Trusted Shimano engineering for dependable and consistent shifting. ## Technical Specifications | Specification | Value | |---------------|-------| | Mounting type | Shimano Rear Direct Mount | | Product dimensions | 17L x 11.3W x 10H centimeters | | Manufacturer | Shimano | | UPC | 192790621159 | | Global Trade Identification Number | 04550170621155 | | Color | Black | | Size | SGS - long | | Style | Single | | Weight | 0.4 Kilograms | | Material Type | other | | Number of Items | 1 | | Season | All-Season | | Sport | Cycling | | Included Components | SHIMANO,Black,ERDM3100SGS Alivio Alivio M3100 | | Batteries Included? | No | | Department | Unisex | | Item model number | C8C086 | | ASIN | B08CGYD213 | ## Product Details - **Brand:** SHIMANO - **Colour:** Black - **Item weight:** 0.2 Kilograms - **League:** Canadian Football League - **Material:** Aluminum ## Images ![Black,ERDM3100SGS Alivio Alivio M3100 rear derailleur, 9-speed, Shadow design, SGS long cage - Image 1](https://m.media-amazon.com/images/I/51x63EFYbSL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: sirve para 2x9 de 11-40?** A: Trabaja bien para 3*9 **Q: Is this compatible for 8 speed?** A: Not perfectly - the m3100 model is really meant for 9 speed **Q: Will this replace the stx rc on a Trek 7300 8 speed?** A: Shimano's Compatibility charts won't show this "9-speed" derailleur as compatible with 8-speed components, but it should work just fine. Shimano 8-speed shifters will work. This RD can handle larger cogs than were common in the 8-speed era, up to 36t largest cog, but assuming you have 11-32 it'll work. I have an stx rc RD on one of my bikes, and wouldn't hesitate to try this as a replacement. **Q: Does it come with the hanger bolt?** A: Hi - It does not. ## Frequently Bought Together - Shimano,Black,ERDM3100SGS Alivio Alivio M3100 Rear derailleur, 9-Speed, Shadow Design, SGS Long cage - SHIMANO Alivio SL-M3100 Alivio Shift Lever, 9-Speed, Band on, Right Hand,Black --- ## 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.hr/products/300020054-black-erdm3100sgs-alivio-alivio-m3100-rear-derailleur-9-speed-shadow](https://www.desertcart.hr/products/300020054-black-erdm3100sgs-alivio-alivio-m3100-rear-derailleur-9-speed-shadow) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-10*