--- product_id: 13091394 title: "Rear Derailleur, RD-TX800, 7/8 SPD, Direct Attach, Bla" brand: "shimano" price: "€ 57.60" currency: EUR in_stock: true category: "Shimano" url: https://www.desertcart.pt/products/13091394-rear-derailleur-rd-tx800-7-8-spd-direct-attach-bla store_origin: PT region: Portugal --- # Lightweight 13.6 oz aluminum alloy 34-tooth max cog capacity Smart Cage tech for MegaRange Rear Derailleur, RD-TX800, 7/8 SPD, Direct Attach, Bla **Brand:** shimano **Price:** € 57.60 **Availability:** ✅ In Stock ## Summary > ⚙️ Shift smarter, ride harder — the RD-TX800 means never missing a beat on the trail! ## Quick Answers - **What is this?** Rear Derailleur, RD-TX800, 7/8 SPD, Direct Attach, Bla by shimano - **How much does it cost?** € 57.60 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/13091394-rear-derailleur-rd-tx800-7-8-spd-direct-attach-bla) ## 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 - • **MegaRange Mastery:** Conquer any terrain with up to 34-tooth cogs for ultimate gear versatility. - • **Sleek Black Finish:** Upgrade your ride’s style and resilience with a sleek, corrosion-resistant black design. - • **Durable & Lightweight:** Crafted from high-strength aluminum alloy weighing just 13.6 oz for long-lasting performance without the bulk. - • **Smart Cage Innovation:** Experience smoother, lighter shifts with Shimano’s cutting-edge Smart Cage technology. - • **Seamless Compatibility:** Fits perfectly on 10x1 braze-on mounts and works flawlessly with 7/8-speed drivetrains. ## Overview The Shimano RD-TX800 Rear Derailleur is a precision-engineered, lightweight aluminum alloy component designed for 7/8-speed mountain and hybrid bikes. Featuring Smart Cage technology for MegaRange compatibility, it supports up to 34-tooth cogs, delivering smooth, reliable shifting across diverse terrains. Its durable black finish and easy braze-on installation make it the go-to upgrade for entry-level to mid-range cyclists seeking dependable performance and style. ## Description Upgrade your bike's shifting performance with the Tourney RD-TX800 Rear Derailleur - the perfect solution for 8-speed mountain biking and hybrid cycles. Designed with precision engineering and innovative technology, this robust derailleur ensures smooth, reliable gear changes every ride. Materials & Build Quality Constructed from high-strength, lightweight materials, the Tourney RD-TX800 offers durability and corrosion resistance, making it ideal for demanding terrains and all-weather conditions. Its sleek black finish not only provides a stylish look but also enhances longevity. Performance & Engineering Engineered with 's advanced Gear Indexing technology, the RD-TX800 delivers crisp, precise gear shifts. The long cage design accommodates larger cogs for a wide gear range, supporting a 34-tooth largest cog and a chain wrap capacity of 43 teeth-perfect for tackling steep climbs and fast descents alike. Components & Technology Equipped with 's Smart Cage technology, the TX800 features a design optimized for MegaRange compatibility with a shorter derailleur cage, reducing weight without sacrificing performance. Compatibility with Mountain rear shifters and a 10x1 standard mount ensures seamless integration with your existing drivetrain setup. Style & Use Case Whether you're upgrading your mountain bike, commuter, or hybrid cycle, the Tourney RD-TX800 provides a versatile, reliable shifting solution. Its black finish complements any bike aesthetic, from rugged trail bikes to urban commuters. Innovative & Differentiating Features Highlighting 's commitment to enhancing rider experience, the RD-TX800's Smart Cage technology minimizes derailleur length while maintaining wide gear ranges, offering a lighter, more efficient setup. This derailleur's engineering focus on durability and smooth operation makes it a standout choice for entry-level to mid-range bicycles seeking dependable performance. Optimized for Search & C ## Features - TX models come with Smart Cage which gives MegaRange compatibility with a shorter derailleur cage - Designed with a long cage and MegaRange compatibility, this derailleur accommodates up to 34-tooth cogs for versatile gearing options across diverse terrains. - Constructed with durable materials and precise engineering, the TX800 ensures smooth, responsive shifts and longevity in demanding riding conditions. - Featuring 's Smart Cage technology, the TX800 delivers optimized chain tension and compatibility with a wide range of components for seamless upgrades. - Ideal for entry-level and budget-conscious cyclists seeking dependable shifting performance, this rear derailleur pairs stylish black finish with easy installation on 10x1 standard mounts. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00O7XMG1C | | Best Sellers Rank | #18,041 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #3 in Rear Bike Derailleurs | | Brand Name | SHIMANO | | Case Material Type | Aluminum Alloy | | Color | Black | | Customer Reviews | 4.6 4.6 out of 5 stars (1,088) | | Included Components | Rear Derailleur | | Item Dimensions L x W x H | 12"L x 8"W x 2"H | | Item Type Name | Rear Derailleur | | Item Weight | 13.6 ounces | | Manufacturer | Shimano Cycling | | Manufacturer Part Number | ERDTX800SGSL | | Material Type | Multi | | Model Number | ERDTX800SGSL | | Mount Type | Braze-On Mount | | Number of Items | 1 | | Number of Teeth | 34 | | UPC | 689228601468 | | Unit Count | 1 Count | | Warranty Description | Limited Warranty | ## Product Details - **Brand:** SHIMANO - **Color:** Black - **Item Weight:** 13.6 ounces - **Material:** Multi - **Mounting Type:** Braze-On Mount ## Images ![Rear Derailleur, RD-TX800, 7/8 SPD, Direct Attach, Bla - Image 1](https://m.media-amazon.com/images/I/610Fxf7AXDL.jpg) ## Frequently Bought Together - Shimano Rear Derailleur, RD-TX800, 7/8 SPD, Direct Attach, Bla - AUTUT 2 Pcs Universal Bicycle Bike Derailleur Hanger Frame Gear Tail Hook, Silver Tone - Bike Chain Kit, Single/6/7/8/9/10/11/12 Speed Multi-Function Bike Mechanic Repair Kit, Chain Breaker and Bike Link Plier with Hook and 6 Pairs Bicycle Buckle, Reusable (6/7/8 Speed Bike Chain Kit) --- ## 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.pt/products/13091394-rear-derailleur-rd-tx800-7-8-spd-direct-attach-bla](https://www.desertcart.pt/products/13091394-rear-derailleur-rd-tx800-7-8-spd-direct-attach-bla) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-09-02*