STIHL Brush Knife Steel Blade | 250 mm 3-Blade 20/25.4 mm

STIHL Brush Knife Steel Blade - 250 mm 3-Blade Cutting Attachment

The STIHL Brush Knife Steel Blade is a durable 3-bladed steel cutting attachment designed for tough brushcutting, forest maintenance, and landscape clearing work. With a 250 mm cutting diameter and 20.0 / 25.4 mm connector, this brush knife is built for cutting through thick grass, reeds, scrub, wild growth, thickets, and thorny bushes.

This tri-bladed steel brush knife is made for difficult cutting conditions where standard trimmer line is not enough. Its robust steel design helps tackle tangled grass, resistant foliage, light scrub, and overgrown areas with strong cutting performance.

For professional use, this type of steel blade should be used only with an approved brushcutter setup equipped with bike handles, a double shoulder harness, the correct guard or limit stop, and proper blade mounting hardware. Always verify your STIHL operator manual before installation.

Product Details

Key Features

• STIHL 3-bladed steel brush knife cutting attachment
• 250 mm metal tool diameter
• 9.843" metal tool diameter
• 20.0 / 25.4 mm connector
• Ideal for thick grass, reeds, scrub, thickets, and thorny bushes
• Durable design built with high-quality components
• No moving parts to lose
• Very robust and durable for demanding cutting applications
• Reversible blade design supports longer periods of uninterrupted use
• Designed for forest, field, property, and landscape maintenance

Compatible STIHL Models

This STIHL 250 mm brush knife blade fits select STIHL trimmers, brushcutters, battery clearing saws, and KombiSystem setups. Use the model list below as a simplified reference only. Always verify your operator manual, approved cutting attachment list, guard or limit stop, handle setup, harness requirement, and mounting hardware before use.

Important: Model fitment alone does not guarantee safe blade use. Steel brush knives require the correct approved cutting attachment setup, guard or limit stop, handle configuration, shoulder harness, mounting hardware, and operator protection. Always follow the STIHL operator manual for your exact machine.

Built for Brush, Scrub, and Heavy Vegetation

This STIHL brush knife is designed for cutting through wild growth, heavy grass, reeds, light scrub, tangled vegetation, and thickets. The steel triple-blade design gives it the durability needed for demanding clearing work where nylon trimmer line may wear quickly or fail to cut effectively.

The blade is ideal for difficult conditions and resistant foliage, making it a strong choice for professional brushcutting, landscape maintenance, property cleanup, ditch clearing, and field maintenance.

Professional Use Recommendation

For professional applications, this steel brush knife should be used with a compatible brushcutter equipped with bike handles, a double shoulder harness, and a limit stop or approved blade guard. This setup helps improve control, balance, and operator safety when using metal cutting attachments.

Do not install this blade on equipment that is not approved for steel cutting attachments. Always use the correct blade hardware and personal protective equipment.

Common Uses

• Brush clearing
• Thick dry grass cutting
• Reed cutting
• Scrub removal
• Thorny bush trimming
• Heavy weed cutting
• Fence line cleanup
• Field and property maintenance
• Roadside and ditch maintenance
• Forest and landscape maintenance

Reversible, Durable Steel Blade

The reversible 3-blade design allows the blade to be flipped when one side becomes worn, helping extend usable service life and reduce downtime during larger cleanup jobs.

With no moving parts to lose and a durable steel construction, this brush knife is built for long-lasting use in tough cutting environments.

Safety and Fitment Note

Steel brush blades are intended only for compatible machines equipped with the correct guard, limit stop, handle setup, blade hardware, and safety equipment. Do not install this blade on equipment that is not approved for metal cutting attachments.

Before ordering or installing, confirm:

• Your STIHL model is approved for a 250 mm brush knife blade
• Your machine supports the required connector size
• Your equipment uses the correct mounting hardware
• Your deflector, blade guard, or limit stop is correct for metal blades
• Your handle configuration is approved for blade use
• Your harness setup is approved for brush knife operation
• Your operator manual approves this cutting attachment

If you are unsure, contact P&P Small Engines with your STIHL model and cutting attachment setup before ordering.

Part Number / Search Terms

This STIHL brush knife may also be searched as:

• STIHL brush knife
• STIHL brush knife blade
• STIHL 250 mm brush knife
• STIHL 3 blade brush knife
• STIHL 3-blade steel blade
• STIHL steel brush blade
• STIHL 250 mm steel blade
• STIHL 20.0 / 25.4 mm brush knife
• STIHL brushcutter blade
• STIHL metal cutting blade
• STIHL blade for thick grass
• STIHL blade for scrub
• STIHL blade for reeds
• STIHL blade for thorny bushes
• STIHL FS 91 brush knife
• STIHL FS 111 brush knife
• STIHL FS 131 brush knife
• STIHL FS 240 brush knife
• STIHL FS 311 brush knife
• STIHL FSA 200 brush knife

Frequently Asked Questions

What size is this STIHL brush knife?

This brush knife has a 250 mm metal tool diameter, equal to approximately 9.843", with a 20.0 / 25.4 mm connector.

What is this blade used for?

It is designed for cutting thick grass, reeds, scrub, wild growth, thickets, and thorny bushes in demanding clearing and maintenance applications.

Is this blade reversible?

Yes. The reversible 3-blade design allows longer periods of use before replacement when maintained and used correctly.

Can this be used on any trimmer?

No. This steel blade should only be used on approved STIHL models with the correct guard or limit stop, bike handle or approved handle setup, harness, blade hardware, and operator manual approval.

What STIHL models does this brush knife fit?

It fits select STIHL FS, FSA, KM, and KMA models including FS 91, FS 111, FS 131, FS 240, FS 251, FSA 120 R, FSA 200, FS 311, FS-KM with select KM engines, and FS-KM with select KMA battery KombiMotors. Always verify your exact setup before ordering.

P&P Small Engines stocks STIHL brush knives, steel blades, trimmer heads, trimmer line, cutting attachments, harnesses, replacement parts, filters, spark plugs, fuel system parts, chains, guide bars, and outdoor power equipment supplies to help keep your equipment ready to work.