--- product_id: 499632307 title: "Shimano Acera RD-M3020-SGS Rear Derailleur - 7/8 Speed, Long Cage, Black" brand: "shimano" price: "82288CFA" currency: XOF in_stock: true reviews_count: 5 category: "Shimano" url: https://www.desertcart.sn/products/499632307-shimano-acera-rd-m3020-sgs-rear-derailleur-7-8-speed store_origin: SN region: Senegal --- # SGS Long Cage for max chain wrap Double Servo tech for precision 7/8 speed versatile drivetrain Shimano Acera RD-M3020-SGS Rear Derailleur - 7/8 Speed, Long Cage, Black **Brand:** shimano **Price:** 82288CFA **Availability:** ✅ In Stock ## Summary > ⚙️ Shift into the future with precision and power! ## Quick Answers - **What is this?** Shimano Acera RD-M3020-SGS Rear Derailleur - 7/8 Speed, Long Cage, Black by shimano - **How much does it cost?** 82288CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/499632307-shimano-acera-rd-m3020-sgs-rear-derailleur-7-8-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 - • **Wide Compatibility:** Seamlessly fits 7 and 8-speed drivetrains, making upgrades or replacements hassle-free. - • **Effortless Adjustment:** User-friendly setup praised by riders, ensuring quick tuning and optimal performance every time. - • **Lightweight Durability:** Crafted from robust aluminium, balancing strength with minimal weight at just 0.39 kg. - • **Extended Chain Capacity:** SGS Long Cage design handles up to 45 teeth, perfect for tackling varied terrains without compromise. - • **Smooth Shifting Mastery:** Double Servo mechanism ensures ultra-precise gear changes, so you never miss a beat on your ride. ## Overview The Shimano Acera RD-M3020-SGS Rear Derailleur combines advanced Double Servo technology with a long cage design to deliver smooth, reliable shifting across 7 and 8-speed drivetrains. Built from durable aluminium and optimized for chain wrap capacity up to 45 teeth, it offers versatile performance for both casual and challenging rides. Highly rated for ease of adjustment and compatibility, this derailleur is a smart upgrade for riders seeking dependable drivetrain efficiency. ## 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 Review: Calidad - Execelente Review: rapport qualite prix excellent - excellent produit facile a ajuster parfait pour mon vieux gary fisher monona 2008 ## 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 | 381,682 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 422 in Bike Rear Dérailleurs | | Brand | SHIMANO | | Brand Name | SHIMANO | | Case Material Type | Aluminium | | Colour | Black | | Customer Reviews | 4.7 out of 5 stars 182 Reviews | | Included Components | Rear Derailleur | | Item Weight | 0.39 Kilograms | | Item weight | 0.39 Kilograms | | Manufacturer | SHIMANO | | Manufacturer Part Number | ERDM30208SGSL | | Material | Aluminium | | Material Type | Aluminium | | Model Number | ERDM30208SGSL | | Mount Type | Braze-On Mount | | Mounting type | Braze-On Mount | | Number of Teeth | 45 | | UPC | 192790897738 | ## Product Details - **Brand:** SHIMANO - **Colour:** Black - **Manufacturer:** SHIMANO - **Material:** Aluminium - **Mounting type:** Braze-On Mount ## Images ![Shimano Acera RD-M3020-SGS Rear Derailleur - 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 ### ⭐⭐⭐⭐⭐ Calidad *by J***7 on 16 February 2025* Execelente ### ⭐⭐⭐⭐⭐ rapport qualite prix excellent *by J***U on 1 May 2026* excellent produit facile a ajuster parfait pour mon vieux gary fisher monona 2008 ### ⭐⭐⭐⭐⭐ Nice derailleur for reasonable price *by J***F on 14 July 2025* Works great on my wife’s bike after adjusting. Can handle larger cassette than older Acera Derailleur. Shift well. Using on a 1 by 8 speed cassette, shout also work with a 2 or 3 speed front derailleur. ## 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.sn/products/499632307-shimano-acera-rd-m3020-sgs-rear-derailleur-7-8-speed](https://www.desertcart.sn/products/499632307-shimano-acera-rd-m3020-sgs-rear-derailleur-7-8-speed) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-07-12*