{"product_id":"aileete-trimmer-gear-head-4137-640-0100-for-stihl-fs55-fs90-fs130-more","title":"AILEETE Trimmer Gear Head 4137 640 0100 for Stihl: FS55, FS90, FS130 \u0026 More","description":"\u003ch2\u003eElevate your Stihl trimmer with the AILEETE Gear Head 4137 640 0100\u003c\/h2\u003e\n\u003cp\u003eReplace worn gear heads with a complete, ready-to-install assembly designed for reliable yard work. The AILEETE Trimmer Gear Head 4137 640 0100 includes gears, thrust washer, rider plate, and a collar nut, all arranged for smooth operation and easy maintenance.\u003c\/p\u003e\n\u003cp\u003eThis replacement part is designed to align with several OEM numbers (4137 640 0100, 4130 640 0100, 4130 641 0300) and fits a broad range of Stihl backpack and handheld units. If your trimmer experiences inconsistent line feeding, gear backlash, or gear wear, this head offers a practical option to refresh performance without a full tool replacement.\u003c\/p\u003e\n\u003ch3\u003eWhat’s included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eReplacement Trimmer Gearbox Head Assembly\u003c\/li\u003e\n  \u003cli\u003eGears, Thrust Washer, Rider Plate, Collar Nut\u003c\/li\u003e\n  \u003cli\u003eReady-to-install unit that replaces the OEM part numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility and fit\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Stihl models across the FS and FR series (e.g., FS25-4 through FS90R, FS94, FS100R, FS130R, FS200, FS240, FS250)\u003c\/li\u003e\n  \u003cli\u003eDesigned for backpack, handheld, Kombi tools, and pole saw configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReal-world use scenarios include seasonal lawn maintenance, edging along sidewalks, and clearing dense undergrowth in small to medium yards. The gear head’s gear train provides a balance of strength and speed, while the included components help ensure proper alignment and secure attachment during operation. While performance can vary with setup, many users report smoother operation and easier maintenance after replacing worn parts with this kit.\u003c\/p\u003e\n\u003ch3\u003eBuying with confidence\u003c\/h3\u003e\n\u003cp\u003eWhen choosing a replacement, the AILEETE kit offers a comprehensive solution: a complete gear head and the essential hardware to reassemble your trimmer quickly, with parts sourced to align with common OEM numbers. Consider this option if you want a single, compatible upgrade for multiple Stihl models.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which Stihl models is the AILEETE Trimmer Gear Head 4137 640 0100 compatible with?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Compatible models include many in the FS and FR series listed in the description for broad coverage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What parts are included with this gear head kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The kit includes the gear head with gears, thrust washer, rider plate, and collar nut for a ready-to-install replacement.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"AILEETE","offers":[{"title":"Default Title","offer_id":43979884494982,"sku":"B08HGSFJSP","price":35.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/1602\/5478\/files\/aileete-trimmer-gear-head-4137-640-0100-in-box.jpg?v=1778676012","url":"https:\/\/patiozora.com\/products\/aileete-trimmer-gear-head-4137-640-0100-for-stihl-fs55-fs90-fs130-more","provider":"PatioZora","version":"1.0","type":"link"}