Maximize your productivity with the STIHL FSS-KM High-Torque Trimmer Attachment. Specifically engineered for heavy-duty commercial work and overgrown areas, this KombiSystem attachment features a newly designed gearbox that delivers exceptional torque. When paired with high-performance powerheads like the KM 131 R or KMA 200 R, the FSS-KM provides the raw power needed to slice through thick, tough grass that would bog down standard trimmers.
The STIHL FSS-KM High-Torque Trimmer stands out with a massive 17.7-inch cutting swath—the largest in the STIHL lineup. This extra-wide path allows operators to cover significantly more ground in a single pass, making it the ideal choice for large-scale mowing on rough terrain, slopes, or long fence lines. It comes standard with the AutoCut® C 26-2 mowing head for reliable line advancement and a 3 dB reduction in noise compared to standard models.
Note: This attachment is specifically optimized for use with the KM 131 R (gas) and KMA 200 R (battery) powerheads.
Key Features & Benefits
Extreme Performance Gearbox
- High-Torque Engineering: The specialized gearbox is designed to maintain high RPMs under heavy loads, providing a cleaner cut in dense vegetation.
- Reduced Noise: Engineered to operate 3 dB quieter than the standard FS-KM, making it more suitable for noise-restricted neighborhoods and early morning shifts.
- Largest Deflector: Features an oversized deflector to provide maximum protection from flying debris while accommodating the massive cutting circle.
Industrial-Scale Efficiency
- 17.7” Cutting Swath: Provides a 2.2-inch wider path than the next model down, drastically reducing the time spent on large properties.
- AutoCut® C 26-2 Head: A professional-grade bump-feed head that simplifies line reloading and ensures consistent line length.
- Heavy-Duty Durability: Built with commercial-grade components to withstand the heat and stress of all-day professional use.
KombiSystem Integration
- Optimized Compatibility: While it fits the Kombi coupling, it is specifically recommended for the highest-output powerheads (KM 131 R and KMA 200 R) to fully utilize the high-torque gearbox.
- Toolless Transition: Features the signature STIHL quick-release system for fast, secure attachment changes without tools.
Technical Specifications
| Attachment Type | High-Torque String Trimmer |
| Weight | 5.97 lbs. |
| Cutting Swath | 17.7" (450 mm) |
| Cutting Head | AutoCut® C 26-2 |
| Noise Reduction | 3 dB less than FS-KM |
