25-2 Trimmer Head Replacement Spools with Spring, for Stihl FS55 FS56 FS56RC FS70R FS80 FS90R FS91R FS110 FS111RX FS120 FS130 Weed Eater Parts

What It Is

This is a replacement spool and spring set for Stihl curved-shaft and straight-shaft trimmers, designed to hold 0.095-inch or 0.105-inch trimmer line. It fits models like FS55, FS56, FS70R, FS80, FS90R, FS91R, FS110, FS111RX, FS120, and FS130—targeting homeowners and light-commercial users needing a drop-in bump-feed spool.

Fitment & Compatibility

• Model check: Verify your Stihl model number (e.g., FS56RC, FS91R) on the trimmer’s decal. This spool is NOT compatible with FS38, FS40, FS45, or FS50 models.
• Spring type: Includes a metal spring—some Stihl trimmers use a plastic spring retainer. If your original had a plastic spring, this aftermarket metal spring may fit but can feel stiffer.
• Line size: Accepts 0.095” (standard) or 0.105” (heavy) line. Do not use 0.080” or 0.130” line—the spool won’t load or feed correctly.
• OEM vs aftermarket: This is a non-OEM part. It replaces Stihl part number 4000 710 0943 (for most FS models) but may have slightly different plastic hardness or fit tolerances. Measure the spool diameter (approx. 2.5”) and compare to your original before buying.

Key Things to Know

• Quality: At $18.99, it’s cheaper than OEM (~$25–30). Users report decent durability but occasional off-center winding that can cause vibration. Inspect the spool for burrs before loading.
• Installation: Easy—remove old spool, install spring, load line. Watch the spring orientation: the flat end goes toward the spool, the angled end toward the housing. A common error is reversing the spring, causing no feed.
• Common gotcha: The line exit holes may be slightly tighter than OEM—use a small file or drill bit to deburr if line jams. Also, the bump knob may not “click” as loudly as Stihl’s, but it still advances line.
• Line loading: Use 10–12 feet per side, wind in the arrow direction (usually clockwise). Overfilling or winding opposite direction will cause feed failure.

Should You Buy It

Buy this if you need a quick, cost-effective replacement for a Stihl FS55–FS130 trimmer and don’t mind a slightly stiffer spring or occasional minor fit tweaks. Skip it if you want guaranteed OEM smoothness, run heavy commercial use, or have a model outside the listed range—stick with genuine Stihl spools for those cases.