Brush Saw Blades for Stihl Cutters: What Fits and Why

The Brush Cutter Blade for Stihl Husqvarna is a third-party blade made by Bolounzaw, not by Stihl. It is a 9-inch (230mm) circular blade with 20 chainsaw-style teeth, sold as a set of two carbon steel blades with an adapter. The listing gives a 1-inch (25.4mm) hole and says the adapter lets it fit straight-shaft trimmers with a 1-inch or 20mm arbor. Maximum speed is 10,000 RPM.

Chainsaw teeth are shaped like the cutters on a chainsaw chain, which helps them bite into woody stems. A handy detail is that the listing says the teeth can be sharpened with a 7/32 round file, so you can touch them up instead of replacing the blade. The listing also stresses safety: wood chips and stones can fly, so it recommends heavy-duty leg protection and eye protection.

This suits Stihl owners who clear woody brush and saplings and like the idea of sharpening a blade at home. For finer, cleaner cuts on small trunks, a many-toothed carbide blade such as the 80-tooth option below is an alternative.

Yutacorex

Yutacorex 10" x 80T Brush Cutter Blade fits for STIHL FS56RCE FS91R FS70R FS94R FS111R FS131 FS91 Weed Eater, Carbide Tip Circular Saw Weed Eater Blades Weed Trimmer Blade with Adapter Kit (2 Pack)

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10″ x 80T Brush Cutter Blade

Best for: FS owners wanting a fine-tooth carbide saw

Pros

• 80 carbide-tipped teeth
• Lists many Stihl FS models
• Two adapter kits included

Cons

• Third-party, not made by Stihl
• Check gearhead part number first

The 10″ x 80T Brush Cutter Blade comes from Yutacorex, a third-party maker, in a two-pack. It is a 10-inch blade with 80 carbide-tipped teeth and a 1-inch arbor bore. The listing says the body is stainless steel and that carbide tips are estimated to last about 10 times longer than plain steel.

Its compatibility list is the most detailed here. It includes a 10-tooth adapter kit for many Stihl FS models, including the FS56RCE, FS91R, FS70R, FS94R, FS111R, FS131, FS240, FS311 and FSA135R, and a 6-tooth adapter kit for many Husqvarna and Jonsered cutters. Each set includes washers, a rider plate, a collar nut and tools. The listing strongly advises checking your trimmer’s model number or gearhead part number before buying, because different adapters fit different machines.

This suits a 10 inch 80T blade for Stihl FS shopper who wants a smooth, saw-like cut through weeds, blackberry bushes and small trunks. Many-toothed blades cut cleanly but can be damaged by stones, so if you work near rocky ground, the simple three-tooth blades may be more forgiving.

Stihl

Stihl 4112 713 4100 25.4 mm/ 1" Brush Knife Steel Blade

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Stihl 4112 713 4100 25.4 mm

Best for: Owners who want genuine Stihl parts

Pros

• Genuine Stihl OEM part
• 1 inch / 25.4mm mount
• Long compatible FS and KM list

Cons

• Single blade
• Listed weight looks wrong

The Stihl 4112 713 4100 25.4 mm brush knife is the only genuine Stihl OEM (original equipment manufacturer) part in this guide. The listing describes it as a Stihl-made steel knife blade with a 25.4mm (1-inch) mounting hole. A brush knife uses a few large cutting edges rather than many small teeth, which suits thick grass, weeds and light brush.

The compatible models listed include the FS90, FS91, FS91R, FS94, FS111, FS111R, FS131, FS240, FS250, FS311, FS361, FS410, FS460, FS490, FS510, FS560, FSA135 and FSA200, plus KombiSystem brush cutter attachments like the FSB-KM and several KM power heads. The listing asks you to confirm that your brush cutter supports metal blades with a 25.4mm hole before installing. It does not specify the blade’s diameter or number of cutting edges, and its listed weight of 1.6 ounces looks too light for a steel blade, so treat that figure with caution.

This is the right choice for owners who want the peace of mind of a genuine Stihl part matched to their machine. If you are still choosing the trimmer itself, our guide to the Stihl brush cutter range explains which models accept blades.

HK

HK 2 Pack 9" x36T Carbide Tip Brush Cutter Blades Weed Eater Blades for Brush Cutter, Trimmer, Weed Eater, Compatible with Husqvarna, Stihl, Fsx, and More

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HK 2 Pack 9″ x36T Carbide

Best for: Small trees and heavy brush

Pros

• 36 carbide-tipped teeth
• Lists Stihl FS 55 to FS 240
• Adapter kit included

Cons

• Third-party, not made by Stihl

The HK 2 Pack 9″ x36T Carbide blades are third-party blades from HK. Each is 9 inches (229mm) across with 36 carbide-tipped teeth and a 1-inch arbor bore, and the listing says an attached washer adapts them to 20mm gear cases. The description calls them premium stainless steel with carbide tips estimated to last about 10 times longer than plain steel.

The listing names a long set of compatible Stihl trimmers, including the FS 55, FS 56, FS 70R, FS 85, FS 90, FS 91, FS 110, FS 130R, FS 131, FS 240 and FS-KM, along with some Husqvarna models. The kit includes two blades plus a thrust washer, rider plate, collar nut, screwdriver, trimmer head cover and fixing plates. It is aimed at small trees, heavy brush, thick weeds and grass.

With 36 teeth, it sits between the 20-tooth chainsaw blade and the 80-tooth saw, balancing speed and smoothness. It suits homeowners with mixed brush and saplings who want a middle-ground carbide tip brush cutter blade.

Best for: Thick weeds and grass on a budget

Pros

• Simple 3-tooth design
• Fits 20mm or 25.4mm arbor
• Adapter kit and washer

Cons

• Third-party, not made by Stihl
• Listing size details contradict

The VIDICA 2 Pack Carbon Steel Brush Cutter Blades are third-party 10-inch, three-tooth blades made of carbon steel, sold as a pair. The listing says they fit most straight-shaft trimmers with a 1-inch (25.4mm) or 20mm arbor and include an adapter kit and washer, with compatibility claimed for several brands including Stihl.

A 3 tooth brush cutter blade has three large cutting points and cuts by slicing rather than sawing. It is well suited to thick weeds, tall grass and light brush. Be aware that the listing contradicts itself: one line says “Size-5inch” with an M10x1.25 threaded arbor and 12,500 max RPM, while the title and other features describe a 10-inch blade for 20mm or 25.4mm arbors. Confirm the size with the seller before buying.

This suits gardeners who mainly battle dense weeds and grass and want a simple, sturdy blade. For woody saplings, a toothed saw blade is the better tool.

Best for: Field clearing with spare blades

Pros

• Two blades and two washers
• Rust-resistant carbon steel
• Fits 20mm or 25.4mm arbor

Cons

• Aftermarket, no Stihl affiliation
• Odd thickness figure listed

The (2-Set) 10″ x 3 Teeth Carbon Steel Brush Cutter Blades come from AR-PRO, and the listing is clear that this is an aftermarket kit produced by CalPalmy with no affiliation with or endorsement from the brands it mentions, including Stihl. You get two 10-inch, three-tooth blades and two washers for trimmers with a 1-inch (25.4mm) or 20mm arbor.

The listing says the blades are made from heat and rust-resistant carbon steel and cut brush, weeds, saplings and twigs, making them suited to field clearing and landscaping. It claims they meet or exceed OEM performance based on the seller’s own in-house testing. The thickness is listed as 1 inch, which is not realistic for a blade, so that figure appears to be an error.

This suits property owners clearing fields or overgrown lots who want a spare blade ready to swap in. It overlaps closely with the VIDICA pair; the AR-PRO listing gives clearer, more consistent size details.