--- product_id: 13091394 title: "Rear Derailleur, RD-TX800, 7/8 SPD, Direct Attach, Bla" brand: "shimano" price: "582 kr" currency: NOK in_stock: true reviews_count: 8 category: "Shimano" url: https://www.desertcart.no/products/13091394-rear-derailleur-rd-tx800-7-8-spd-direct-attach-bla store_origin: NO region: Norway --- # Lightweight 13.6 oz design 34-tooth max cog capacity Smart Cage tech for MegaRange Rear Derailleur, RD-TX800, 7/8 SPD, Direct Attach, Bla **Brand:** shimano **Price:** 582 kr **Availability:** ✅ In Stock ## Summary > ⚙️ Shift smarter, ride harder — never miss a gear! ## Quick Answers - **What is this?** Rear Derailleur, RD-TX800, 7/8 SPD, Direct Attach, Bla by shimano - **How much does it cost?** 582 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/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 - • **Sleek & Stealthy:** Matte black finish blends style with rugged reliability for every ride. - • **Durable Precision:** Crafted from high-strength aluminum alloy for long-lasting, corrosion-resistant performance. - • **MegaRange Mastery:** Conquer any terrain with up to 34-tooth cogs for ultimate gear versatility. - • **Smart Cage Innovation:** Experience optimized chain tension and reduced derailleur length for smoother shifts. - • **Seamless Compatibility:** Fits 7/8-speed drivetrains with standard 10x1 braze-on mount for easy upgrades. ## Overview The Shimano RD-TX800 Rear Derailleur is engineered for 7/8-speed mountain and hybrid bikes, featuring Smart Cage technology for MegaRange compatibility with up to 34-tooth cogs. Lightweight yet durable, its aluminum alloy build ensures smooth, precise shifting and long-term reliability. Designed for easy installation on standard braze-on mounts, this sleek black derailleur is the perfect upgrade for riders seeking dependable performance across diverse terrains. ## Description The Tourney RD-TX800 Rear Derailleur is designed for 8-speed drivetrains and features a long cage with Smart Cage technology to support MegaRange compatibility. It is compatible with mountain rear derailleurs and shifters. The derailleur mounts using a 10x1 standard and accommodates a largest cog size of 34 teeth, with a chain wrap capacity of 43. The derailleur is finished in black. Review: Reliable Budget Shimano Rear Derailleur For 7 And 8 Speed Bikes - TL;DR: Solid entry level Shimano rear derailleur that shifts reliably for 7 and 8 speed setups when installed and adjusted correctly. I picked up this Shimano Tourney TX RD TX800 as a replacement derailleur for a basic city and light trail bike. For this purpose it has performed as advertised. Once installed and dialed in, the shifting across the cassette is predictable, with gears engaging cleanly as long as the cable tension and limit screws are set properly. I paired it with a matching Shimano shifter and a standard 7 speed freewheel, and the components work together without drama. This is an entry level unit, so the materials lean more toward stamped steel and basic finishes rather than the lighter alloys you see on higher groups, but that is reflected in the price. For commuter and recreational riding, the extra weight is not very noticeable and the derailleur feels robust enough to handle daily use. The medium cage length provides enough capacity for a reasonably wide range cassette, which is helpful if the bike is used in varied terrain. Installation is straightforward if you have some familiarity with derailleur setup or are willing to follow a guide. The B tension, high, and low limit adjustments respond as expected, and the cable pinch bolt is easy to access. In my experience, once everything is set, the derailleur holds its adjustment well and only needs occasional minor tweaks as the cable stretches. This is only an opinion, not objective truth, since results will depend heavily on the condition of the rest of the drivetrain and the quality of the installation. Overall, for an affordable replacement or upgrade on a basic 7 or 8 speed bike, this derailleur is a practical choice that does what it claims to do. Thank you for reading my review here, I try to be helpful. Notify/write to me here on desertcart if you have any additional questions for me Review: Just mounted it. - So far so good, mounted it today, replacing an older, bent unit. I really didn't need to adjust it much. ## Features - TX models come with Smart Cage which gives MegaRange compatibility with a shorter derailleur cage - Features a long cage design to accommodate larger gear ranges and maintain chain tension. - Includes RD Mount with a 10x1 standard for secure rear derailleur attachment. - Black color finish offers a sleek, durable appearance suitable for various bike styles. - Smart Cage design supports MegaRange compatibility while using a shorter derailleur cage. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00O7XMG1C | | Best Sellers Rank | #28,874 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #7 in Rear Bike Derailleurs | | Brand | SHIMANO | | Brand Name | SHIMANO | | Case Material Type | Aluminum Alloy | | Color | Black | | Customer Reviews | 4.6 out of 5 stars 1,095 Reviews | | Included Components | Rear Derailleur | | Item Dimensions L x W x H | 12"L x 8"W x 2"H | | Item Highlight | (Black) | | Item Type Name | Rear Derailleur | | Item Weight | 13.6 ounces | | Manufacturer | Shimano Cycling | | Manufacturer Part Number | ERDTX800SGSL | | Material | Multi | | Material Type | Multi | | Model Number | ERDTX800SGSL | | Mount Type | Braze-On Mount | | Mounting Type | Braze-On Mount | | Number of Items | 1 | | Number of Teeth | 34 | | Product Dimensions | 12"L x 8"W x 2"H | | 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) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Reliable Budget Shimano Rear Derailleur For 7 And 8 Speed Bikes *by S***M on November 16, 2025* TL;DR: Solid entry level Shimano rear derailleur that shifts reliably for 7 and 8 speed setups when installed and adjusted correctly. I picked up this Shimano Tourney TX RD TX800 as a replacement derailleur for a basic city and light trail bike. For this purpose it has performed as advertised. Once installed and dialed in, the shifting across the cassette is predictable, with gears engaging cleanly as long as the cable tension and limit screws are set properly. I paired it with a matching Shimano shifter and a standard 7 speed freewheel, and the components work together without drama. This is an entry level unit, so the materials lean more toward stamped steel and basic finishes rather than the lighter alloys you see on higher groups, but that is reflected in the price. For commuter and recreational riding, the extra weight is not very noticeable and the derailleur feels robust enough to handle daily use. The medium cage length provides enough capacity for a reasonably wide range cassette, which is helpful if the bike is used in varied terrain. Installation is straightforward if you have some familiarity with derailleur setup or are willing to follow a guide. The B tension, high, and low limit adjustments respond as expected, and the cable pinch bolt is easy to access. In my experience, once everything is set, the derailleur holds its adjustment well and only needs occasional minor tweaks as the cable stretches. This is only an opinion, not objective truth, since results will depend heavily on the condition of the rest of the drivetrain and the quality of the installation. Overall, for an affordable replacement or upgrade on a basic 7 or 8 speed bike, this derailleur is a practical choice that does what it claims to do. Thank you for reading my review here, I try to be helpful. Notify/write to me here on Amazon if you have any additional questions for me ### ⭐⭐⭐⭐⭐ Just mounted it. *by J***H on September 26, 2026* So far so good, mounted it today, replacing an older, bent unit. I really didn't need to adjust it much. ### ⭐⭐⭐⭐⭐ Installation is a challenge *by B***N on August 14, 2026* Shimano replacement is OME for my e-bike. ## 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.no/products/13091394-rear-derailleur-rd-tx800-7-8-spd-direct-attach-bla](https://www.desertcart.no/products/13091394-rear-derailleur-rd-tx800-7-8-spd-direct-attach-bla) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-10-14*