Dual Line Trimmer Head C26-2 for Stihl FS55 FS90 FS250

Dual Line Grass Trimmer Head C26-2 — Compatible with Stihl FS Series

Keep your lawn and garden looking immaculate with this high-quality replacement trimmer head. Designed as a direct drop-in replacement for the Autocut C26-2 system, this dual-line cutting head delivers reliable, efficient trimming performance for both mowing and thinning tasks. Whether you're edging borders or tackling overgrown patches, this head gets the job done efficiently and economically.

Key Features

• Dual-Line Cutting System: Two-line design for thorough mowing and thinning coverage, reducing passes and saving you time.
• Tap-and-Go Line Advance: The nylon cutting line advances automatically — simply tap the head against the ground while operating to extend fresh line. No stopping, no fumbling.
• 2.4mm Line Compatibility: Engineered for use with standard 2.4mm nylon trimmer line for optimal cutting results.
• Easy Installation: Straightforward thread-on mount (10×1.0mm bottom thread hole) makes swapping out your old head quick and hassle-free.
• Durable Plastic Construction: Built from sturdy, impact-resistant plastic designed for extended outdoor use season after season.
• Wide Model Compatibility: Fits a broad range of Stihl FS and FR trimmer models — see compatibility list below.

Specifications

Compatibility

This trimmer head is compatible with the following Stihl models:

• FS 55, FS 56, FS 70, FS 80, FS 90, FS 91, FS 94, FS 110, FS 111, FS 120, FS 130, FS 131, FS 240, FS 250
• FR 131, FR 460

Always verify your model number and thread direction before installation to ensure a proper fit.

What's in the Box

• 1 × Replacement Dual-Line Trimmer Head (C26-2 Autocut Compatible)

Learn More About Outdoor Power Equipment Safety

For guidance on safe operation of string trimmers and outdoor power tools, visit the U.S. Consumer Product Safety Commission (CPSC) Lawn & Garden Safety Guide.

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Frequently Asked Questions

Q: Will this dual-line trimmer head fit my Stihl FS90?

A: Yes! This C26-2 Autocut-compatible trimmer head is designed to fit the Stihl FS 90 as well as many other FS and FR series models including FS 55, FS 70, FS 80, FS 110, FS 120, FS 130, FS 240, FS 250, FR 131, and FR 460. Always check the OEM numbers (4002 710 2137 / 4002 710 2169) and thread specification (10×1.0mm) against your model before installing.

Q: What size nylon line does this trimmer head use?

A: This replacement trimmer head is designed to work with 2.4mm diameter nylon trimmer line. Using the correct line diameter ensures proper feeding, cutting performance, and longevity of the head.

Q: How does the automatic line advance work?

A: This head uses a tap-and-go advance system. While the trimmer is running, briefly tap the bottom of the cutting head against the ground — this action releases a small amount of fresh nylon line automatically, keeping your cutting line at the optimal length without any manual adjustment or tool use.

Q: Is this an OEM Stihl part?

A: No — this is an aftermarket replacement part designed to be compatible with Stihl Autocut C26-2 trimmer heads. It replaces OEM numbers 4002 710 2137 and 4002 710 2169 and is built to equivalent functional specifications at a more economical price point.