Trimmer Gear Head / Gearbox Head Assembly Fits for Stihl FS56RC  FS70R  FS91R  FS94R  FS111R  FS131  FS131R  FS56 RC  String Trimmer & Brush Cutter – Replaces Part No. 4180‑640‑0114 – Weed Eater Parts

All‑In‑One Installation Kit:Package includes 1 × gear head(No. 4180 640 0114), 1 × rider plate, 1 × thrust washer, 1 × thrust plate, 1 × M10 × 1 LH collar nut, 5 × stainless‑steel screws. Precision‑Cut Bevel Gears for Smooth Power:CNC‑machined 10‑tooth gears and heat‑treated spindle deliver steady torque with lower vibration and noise, protecting your engine while slicing through tough grass, reeds, and light brush. Stable performance keeps blades tracking true for a cleaner, faster cut.. Wide Application:It can be the wacker brush cutter head replacement for Stihl series: FS 56 rc FS 56 C-E FS56 RC FS56RC FS70R FS 70C FS 70 C-E FS 70RC-E FS91 FS91R FS94R FS 94 RC-E FS120 FS120R FS131R FS130R FSA130 FS131 FSA135 FSA 135R FS240 FS 240R FS 240 C-E FS250 FS260 FS250R KM F5 KMA. Advantage – Built to Last:The low‑pressure‑cast aluminum housing provides exceptional strength for continuous heavy‑duty work. Hardened stainless‑steel screws resist rust and maintain a secure clamp season after season.. Cost‑Performance – Smart Value Upgrade:The 4180 640 0114 replacement trimmer‑head gearbox is low‑pressure cast from premium aluminum, giving it a compact, high‑strength build that remains light yet durable. Enjoy a smoother cutting experience without the premium price tag.