Stihl 4180 640 7301 – Set of Pinions
Product Description:
The Stihl 4180 640 7301 Set of Pinions is a genuine OEM gear set designed to restore proper drive performance in the gearhead assembly of select Stihl brush cutters and clearing saws. This set includes the bevel pinion and mating gear, both precision-cut to deliver smooth, reliable power transfer from the drive shaft to the cutting head.
Manufactured from high-strength hardened steel, these pinions are built to withstand constant high-torque operation in demanding brush cutting environments. Ideal for servicing worn or damaged gearheads to extend the life and performance of your tool.
Key Features:
✅ Part Number: 4180 640 7301
✅ Includes: Bevel pinion and driven gear
✅ Type: Genuine gearhead drive pinion set
✅ Material: Hardened steel for maximum durability
✅ Application: Restores drive function in trimmer and brush Cutter gearboxes
✅ Fitment: OEM-grade replacement for factory gear performance
Compatible Models:
Commonly used in the following Stihl machines:
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FS Series: FS 111, FS 120, FS 131, FS 235, FS 240, FS 250, FS 260
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FR Series: FR 131 T, FR 235, FR 410 C‑E, FR 460 TC‑E/FM/EM, FR 480 C‑E
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Other compatible FS/FR models with similar gearhead assemblies
(Always check your model's parts diagram for correct fitment.)
Why Choose Genuine Stihl Parts?
✅ Designed for exact fit and factory-spec performance
✅ Smooth gear engagement and quiet operation
✅ Resists wear, heat, and vibration in heavy-duty use
✅ Ideal for routine maintenance or repair of gear-driven heads
