--- product_id: 481941776 title: "ACERA Rear DERAIL 7/8-SPEED Long CAGE Black" brand: "shimano" price: "11858 som" currency: KGS in_stock: true reviews_count: 13 category: "Shimano" url: https://www.desertcart.kg/products/481941776-acera-rear-derail-7-8-speed-long-cage-black store_origin: KG region: Kyrgyzstan --- # SGS Long Cage for max chain wrap Double Servo tech for precision 7/8 speed compatibility ACERA Rear DERAIL 7/8-SPEED Long CAGE Black **Brand:** shimano **Price:** 11858 som **Availability:** ✅ In Stock ## Summary > ⚙️ Shift into the future with precision and power! ## Quick Answers - **What is this?** ACERA Rear DERAIL 7/8-SPEED Long CAGE Black by shimano - **How much does it cost?** 11858 som with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/481941776-acera-rear-derail-7-8-speed-long-cage-black) ## 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 for Endurance:** Durable Shimano engineering backed by a 2-year warranty keeps your ride reliable season after season. - • **Extended Chain Capacity:** SGS Long Cage design handles up to 45 teeth, perfect for tackling varied terrain without compromise. - • **Smooth Shifting Mastery:** Double Servo mechanism ensures ultra-precise gear changes, so you never miss a beat on your ride. - • **Versatile Speed Compatibility:** Seamlessly supports 7 and 8-speed drivetrains, making upgrades and replacements hassle-free. - • **Effortless Installation & Adjustment:** User-friendly design means quick setup and fine-tuning, so you spend less time wrenching and more time riding. ## Overview The Shimano Acera RD-M3020-SGS Rear Derailleur features advanced Double Servo technology for smooth, precise shifting across 7 and 8-speed drivetrains. Its SGS Long Cage design supports a chain wrap capacity of 45 teeth, enabling versatile performance on diverse terrains. Built with Shimano’s renowned durability and backed by a 2-year warranty, this derailleur offers reliable, high-performance gear changes for both casual riders and cycling enthusiasts. ## Description The Shimano Acera RD-M3020 rear derailleur features Double Servo technology to provide smooth, precise shifting and helps you ride challenging terrain with fewer interruptions. Double Servo mechanism enables the rear derailleur to move in an optimum path Versatile performance and wide compatibility SGS Long cage ## Features - Double Servo mechanism enables the rear derailleur to move in an optimum path - Versatile performance and wide compatibility - SGS Long cage - Chain Wrap Capacity (teeth): 45 - Drivetrain Speeds: 7,8 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BGFBSYQ3 | | Best Sellers Rank | #89,759 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #42 in Rear Bike Derailleurs | | Brand | SHIMANO | | Brand Name | SHIMANO | | Case Material Type | Aluminum | | Color | Black | | Customer Reviews | 4.7 out of 5 stars 183 Reviews | | Included Components | Rear Derailleur | | Item Weight | 0.39 Kilograms | | Manufacturer | Shimano | | Manufacturer Part Number | ERDM30208SGSL | | Material | Aluminum | | Material Type | Aluminum | | Model Number | ERDM30208SGSL | | Mount Type | Braze-On Mount | | Mounting Type | Braze-On Mount | | Number of Teeth | 45 | | UPC | 192790897738 | | Warranty Description | 2 years | ## Product Details - **Brand:** SHIMANO - **Color:** Black - **Item Weight:** 0.39 Kilograms - **Material:** Aluminum - **Mounting Type:** Braze-On Mount ## Images ![ACERA Rear DERAIL 7/8-SPEED Long CAGE Black - Image 1](https://m.media-amazon.com/images/I/61LquuwOcdL.jpg) ## Questions & Answers **Q: Will this replace stx rc?** A: Yes it will as long as your low sprocket on your cassette is as least a 30t. There are cheaper Shimano derailleurs that will also work. What makes this one special is it can be used on a 1x setup with a 11-40T cassette. **Q: Will this replace an sis megarange?** A: A highly qualified "Yes". Be prepared to become a self-taught expert in bicycle derailleurs in the process. Expect to discover that you need other parts, such as a hanger-adapter. You will almost certainly need to replace your shifter cable and housing, as the cable entry is different, necessitating rerouting, and hence a different length cable and housing. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by J***F on July 14, 2025* ### ⭐⭐⭐⭐⭐ Review *by G***O on September 23, 2023* ### ⭐⭐⭐⭐⭐ Review *by D***S on December 7, 2025* ## Frequently Bought Together - Shimano Acera RD-M3020-SGS Rear Derailleur - 7/8 Speed, Long Cage, Black - KMC Chain 8SP X8-Silver/Grey - X8.93 - SHIMANO Unisex Cshg4008140 CS HG400 8 Speed Cassette 11 40T, Silver, 40 Teeth UK --- ## 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.kg/products/481941776-acera-rear-derail-7-8-speed-long-cage-black](https://www.desertcart.kg/products/481941776-acera-rear-derail-7-8-speed-long-cage-black) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-05-15*