This gearbox is a direct replacement for Stihl brushcutter models FS120, FS130, FS200, FS250, FS90, FS100, FR130, FR220, FR350, FR450, FR480 and FT100. It replaces OEM part number 4137 640.
The gearbox is engineered to restore cutting performance on compatible Stihl equipment. Installation is straightforward on supported models, making it a practical solution for equipment maintenance and repair.
Suitable for a wide range of Stihl brushcutter and straight-shaft variants including FS83, FS85, FS87 and FR85 series. Whether you’re maintaining professional landscaping equipment or a personal garden tool, this gearbox delivers reliable operation.
All products are assessed for quality before dispatch. Items received faulty or damaged are eligible for return, refund or replacement under the Australian Consumer Law. Returns for change of mind are not accepted.
Delivery to Victoria typically takes 7–10 working days. Other states (NSW, SA, ACT, QLD, WA, NT, TAS) generally receive orders within 9–12 working days, excluding weekends and public holidays.
Contact our customer service team before or after purchase if you have questions about compatibility or shipping.

















