Stihl brush-knife steel blade 25.4 mm (1") — 25.4mm center mount, durable metal cutting for woody brush

This OEM Stihl steel blade offers a durable, purpose-built cutting edge for homeowners and pros who need reliable metal cutting power where line trimmers struggle. Engineered and manufactured to Stihl standards, this 25.4 mm central-mount blade fits a range of petrol and battery-powered brushcutter gearboxes that accept metal blades. It is intended for trimming heavy weeds, small saplings and thick, brushy patches that require a sharp, rigid blade.

Which machines is this blade compatible with?

The blade fits Stihl brushcutters and KombiMotor setups that accept a 25.4 mm (1") mounting hole and are rated for metal blade use. Always verify your unit's manual before installing metal blades to confirm gearbox speed and safety recommendations.

• Compatible models include FS90, FS91, FS91R, FS94, FS111, FS111R, FS111RX, FS131, FS131R
• Also fits FS240, FS240R, FS250, FS251, FS251R, FS311, FS361, FS361C-EM
• Suitable for FS410, FS460, FS461C-EM, FS490, FS510, FS560, FS561C-EM
• Works with FSA135, FSA135R, FSA200, FSA200R, FSB-KM and many KombiMotor attachments like KM56RC-E, KM91R

How does the steel blade perform compared with nylon line?

Steel blades cut through thicker, woody material that nylon heads cannot handle, delivering a cleaner, faster cut on saplings and dense brush. They keep a sharp edge longer under heavy use but require more cautious operation and appropriate mounting to avoid damage.

• Stronger cutting action for woody stems and thick weeds
• Longer wearing edge on abrasive tasks vs. trimmer line
• Requires metal-blade compatible gearbox and safety guard
• Not suitable for edging near concrete or fragile obstacles

What should I check before installing this blade?

Confirm that your brushcutter's gearbox supports metal blades and that the center hole matches 25.4 mm (1"). Use the correct flange, washer and torque specifications from Stihl to prevent wobble and premature wear. Always replace damaged or bent blades rather than attempting repairs.

• Measure center mounting hole — must be 25.4 mm (1")
• Verify your model is listed for metal blades in the operator manual
• Use proper mounting hardware and torque per Stihl guidance
• Inspect blade for straightness and integrity before each use

What safety and maintenance steps keep the blade effective?

Maintain the blade by cleaning sap and resin after use and sharpening or replacing when chipped or rounded. Operate the cutter with the correct guard in place, wear protective gear, and avoid striking hard objects which can damage the blade and create hazards.

• Clean blade after cutting to remove debris and sap
• Sharpen or replace when edge dulls or if blade is nicked
• Wear eye, hand and leg protection and keep bystanders clear
• Do not use near masonry, fences or hidden rocks

Who this is for: This genuine Stihl steel brush knife suits landscapers, landowners and municipal crews who need a heavy-duty cutting tool for thick brush, tall weeds and small woody growth. If you own a Stihl brushcutter that supports a 25.4 mm metal blade and you want dependable OEM quality and fit, this blade is built to meet those demands while matching Stihl's safety and performance expectations.