Stihl engine series 1139 · HO · in production
MS 171 · MS 181 (early EU) · MS 211
Displacement31.8–35.2 cc
Guide bar14–18″
Chain3/8″ Picco / .325″
Production2009→now
Chains & bars that fit the MS 171 · MS 181 (early EU) · MS 211
Pitch & gauge 3/8″ Picco / .325″ · recommended bar 14–18″ · round file 5/32" (4.0 mm)
Files, oil & sharpening
Suggested match: Oregon 90/91-series (e.g. 91PX). 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 (3)
| Model | Years | Market | Rarity | Notes |
|---|---|---|---|---|
| MS 171 | 2009→now | EU/Global | Current | Between 170 and 181 |
| MS 181 (early) | 2009–12 | EU | Uncommon | ⚠ Series 1139, not 1130 — different housing |
| MS 211 / 211 C-BE | 2009→now | Global | Current | Homeowner crossover |
Data confidence
Provenance for this family's figures — verify anything tagged estimated, approx, or stale-risk against STIHL spec sheets.