Stihl engine series 1121 · PRO
024 · 026 · MS 260 · MS 240
Displacement41.6–48.7 cc
Guide bar16–18″
Chain.325″ · .050–.063″ (3/8″ option)
Production1981–2011
Chains & bars that fit the 024 · 026 · MS 260 · MS 240
Pitch & gauge .325″ · .050–.063″ (3/8″ option) · recommended bar 16–18″ · round file 3/16" (4.8 mm)
Files, oil & sharpening
Suggested match: Oregon 95-series (95VPX) / 21–22 LPX. Confirm the drive-link count for your exact bar length before ordering. Genuine STIHL chain isn't sold online — these are equivalent aftermarket (Oregon) specs.
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Models in this family (9)
| Model | Years | Market | Rarity | Notes |
|---|---|---|---|---|
| 024 AV | 1981–83 | Global | Uncommon | Base, no QuickStop |
| 024 AVEQ / AVES | 1982–89 | Global | Common | QuickStop / Super |
| 024 AVEQ-WB | 1985–94 | US | Uncommon | Wood Boss |
| 026 / 026 Pro | 1988–02 | Global | Very Common | High collector demand |
| 026 WB | 1988–02 | US | Uncommon | Wood Boss |
| 026 QS | 1988–02 | EU | Uncommon | EU QuickStop designation |
| MS 260 / 260 P | 2002–11 | Global | Very Common | MS-era 026 |
| MS 260 C-B / C-BQ | 2002–11 | EU | Uncommon | ErgoStart variants |
| MS 240 | 2001–09 | EU/AU | Uncommon | EU/AU only; never US |
Data confidence
Provenance for this family's figures — verify anything tagged estimated, approx, or stale-risk against STIHL spec sheets.