STIHL Durocut 48 Line Serrated .080

What It Is

The STIHL Durocut 48 Line Serrated .080 is a heavy-duty, serrated trimmer line designed for STIHL’s Durocut 48 fixed-line head. It’s built for commercial-grade cutting through thick grass, weeds, and light brush.

Fitment & Compatibility

• Line diameter: .080 inch (2.0 mm) – check your trimmer’s manual for maximum line diameter; most STIHL trimmers accept .080, but some older or smaller models may require .065.
• Head type: Fits only the STIHL Durocut 48 head (pre-wound cartridge). Not compatible with bump-feed or other fixed-line heads.
• OEM vs aftermarket: This is genuine STIHL – exact fit for Durocut 48. Aftermarket .080 line may work but won’t have the serrated edge or same durability.
• Model check: Works on any STIHL trimmer that uses the Durocut 48 head (e.g., FS 40, FS 55, FS 70, FS 90, FS 111, FS 130). Not for other brands or heads.

Key Things to Know

• Serrated edge cuts faster – the teeth slice through thick material, reducing bogging compared to round line. But it wears faster on concrete or gravel.
• Pre-wound cartridges – no winding needed; just snap in. Saves time but costs more per spool than bulk line.
• Installation is tool-free – remove old head, align tabs, press cartridge in. Takes under a minute.
• Common gotcha: Don’t use on electric trimmers – the Durocut 48 head is designed for gas-powered STIHL models. For electric, use a compatible head like the AutoCut.

Should You Buy It

Buy this if you have a STIHL gas trimmer with a Durocut 48 head and need serious cutting power for heavy weeds or overgrown areas. Skip it if you trim mostly grass or hit hard surfaces often – the serrated edge will dull quickly, and round line will last longer for less money.