--- product_id: 144525197 title: "Trimmer Gearbox Head for Stihl FS55 FS55R FS55RC FS56 FS56RC FS80 FS85 FS90 FS90R FS94 FS94R FS100RX FS110 FS120 FS130 FS130R FS240 FS240R FS250 FS-KM Gear Head 4137 640 0100" brand: "farwind" price: "1501006₫" currency: VND in_stock: true reviews_count: 8 url: https://www.desertcart.vn/products/144525197-trimmer-gearbox-head-for-stihl-fs55-fs55r-fs55rc-fs56-fs56rc store_origin: VN region: Vietnam --- # Lightweight & easy install 10 teeth precision gearing Aluminum alloy durable body Trimmer Gearbox Head for Stihl FS55 FS55R FS55RC FS56 FS56RC FS80 FS85 FS90 FS90R FS94 FS94R FS100RX FS110 FS120 FS130 FS130R FS240 FS240R FS250 FS-KM Gear Head 4137 640 0100 **Brand:** farwind **Price:** 1501006₫ **Availability:** ✅ In Stock ## Summary > ⚙️ Upgrade your trim game with precision and durability! ## Quick Answers - **What is this?** Trimmer Gearbox Head for Stihl FS55 FS55R FS55RC FS56 FS56RC FS80 FS85 FS90 FS90R FS94 FS94R FS100RX FS110 FS120 FS130 FS130R FS240 FS240R FS250 FS-KM Gear Head 4137 640 0100 by farwind - **How much does it cost?** 1501006₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/144525197-trimmer-gearbox-head-for-stihl-fs55-fs55r-fs55rc-fs56-fs56rc) ## Best For - farwind enthusiasts ## Why This Product - Trusted farwind brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Installation:** Lightweight design and flexible mounting make swapping gearboxes quick and tool-friendly. - • **Universal Compatibility:** Fits a wide range of Stihl straight shaft trimmers, making upgrades and replacements hassle-free. - • **Optimized for Versatility:** Square attachment holes and 1-inch shaft diameter accommodate various mowing blades and trimmer heads. - • **Premium Aluminum Alloy Build:** Corrosion-resistant and sturdy structure built to withstand tough outdoor conditions. - • **Precision Engineered Gear Teeth:** 10 teeth design ensures smooth, reliable power transfer for peak trimming performance. ## Overview This Trimmer Gearbox Head is a high-quality replacement part compatible with numerous Stihl straight shaft trimmers. Featuring a corrosion-resistant aluminum alloy body, 10 precision gear teeth, and a lightweight design, it offers easy installation and reliable performance for professional-grade trimming tasks. ## Description Gearbox come with mounting screws to attach it to the trimmer Material: Metal Color: Silver Size: 75x155mm(3x6 inch) Package include: 1 x Trimmer Gearbox Assembly2 x Mounting screws ## Features - Replace OEM Part: 4137 640 0100, 4130 640 0100, 4130 641 0300 - Aluminum alloy body, sturdy structure, stable working performance, corrosion-resistant - Light weight, easy to install, flexible for changing mowing blades and trimmer heads, the best alternative to trimmer gearboxes - 10 teeth, 1 in/25.4 mm diameter shaft, square attachment holes, fits most straight shaft trimmers - Compatible with Stihl FS36, FS40, FS44,FS100, FS100R, FS100X, FS100RX, FS110, FS110R, FS110X, FS110RX, FS120, FS120R, FS130, FS130R, FS200, FS200R, FS240, FS240R, FS250, FS250R, FS260, FS260C, FS260RC, FS460C, FS460RC, FS480, FS480C, FR85, FR85T, FR130T, FR220, FR350, FR450, FR460, FR480, FT100, FS-KM ## Images ![Trimmer Gearbox Head for Stihl FS55 FS55R FS55RC FS56 FS56RC FS80 FS85 FS90 FS90R FS94 FS94R FS100RX FS110 FS120 FS130 FS130R FS240 FS240R FS250 FS-KM Gear Head 4137 640 0100 - Image 1](https://m.media-amazon.com/images/I/61pU2On-1JL.jpg) ![Trimmer Gearbox Head for Stihl FS55 FS55R FS55RC FS56 FS56RC FS80 FS85 FS90 FS90R FS94 FS94R FS100RX FS110 FS120 FS130 FS130R FS240 FS240R FS250 FS-KM Gear Head 4137 640 0100 - Image 2](https://m.media-amazon.com/images/I/61xdLXUuRPL.jpg) ![Trimmer Gearbox Head for Stihl FS55 FS55R FS55RC FS56 FS56RC FS80 FS85 FS90 FS90R FS94 FS94R FS100RX FS110 FS120 FS130 FS130R FS240 FS240R FS250 FS-KM Gear Head 4137 640 0100 - Image 3](https://m.media-amazon.com/images/I/61O7KbNQUdL.jpg) ![Trimmer Gearbox Head for Stihl FS55 FS55R FS55RC FS56 FS56RC FS80 FS85 FS90 FS90R FS94 FS94R FS100RX FS110 FS120 FS130 FS130R FS240 FS240R FS250 FS-KM Gear Head 4137 640 0100 - Image 4](https://m.media-amazon.com/images/I/61zvaPHO3IL.jpg) ![Trimmer Gearbox Head for Stihl FS55 FS55R FS55RC FS56 FS56RC FS80 FS85 FS90 FS90R FS94 FS94R FS100RX FS110 FS120 FS130 FS130R FS240 FS240R FS250 FS-KM Gear Head 4137 640 0100 - Image 5](https://m.media-amazon.com/images/I/61O4Uvs+0IL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good value for money *by D***N on May 22, 2025* It was surprisingly well built for an after market part. So far no problems ### ⭐⭐⭐⭐⭐ Excellent item *by T***S on May 7, 2025* Everything fits perfect ### ⭐⭐⭐⭐ Guard doesn’t fit. *by B***N on May 27, 2023* Part fits on the trimmer great but not the correct design for the guard ## Frequently Bought Together - Farwind Trimmer Gearbox Head for Stihl FS55 FS55R FS55RC FS56 FS56RC FS80 FS85 FS90 FS90R FS94 FS94R FS100RX FS110 FS120 FS130 FS130R FS240 FS240R FS250 FS-KM Gear Head 4137 640 0100 - AILEETE 25-2 Bump Feed Trimmer Head 4002 710 2108 for Stihl FS55 FS55R FS56 FS56RC FS70 FS70R FS80 FS85 FS90 FS90R FS91R FS94R FS100RX FS110 FS111RX FS120 FS130 FS131 FS240, Replaces 4002 710 2191 - AILEETE C26-2 Dual Line Trimmer Head 4002 710 2169 for Stihl FS55 FS55R FS56 FS56RC FS70 FS70R FS80 FS85 FS90 FS90R FS91 FS94 FS110 FS120 FS130 FS131 FS131R FS240 FS250 Brushucutters --- ## 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.vn/products/144525197-trimmer-gearbox-head-for-stihl-fs55-fs55r-fs55rc-fs56-fs56rc](https://www.desertcart.vn/products/144525197-trimmer-gearbox-head-for-stihl-fs55-fs55r-fs55rc-fs56-fs56rc) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-04-26*