Stihl engine series 1123 · HO · in production
021/023/025 · MS 210/230/250
Displacement35.2–45.4 cc
Guide bar16–18″
Chain.325″ · .063″ (US) / 3/8″ Picco (EU)
Production1990→now
Chains & bars that fit the 021/023/025 · MS 210/230/250
Pitch & gauge .325″ · .063″ (US) / 3/8″ Picco (EU) · recommended bar 16–18″ · 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 (6)
| Model | Years | Market | Rarity | Notes |
|---|---|---|---|---|
| 021 | 1990–02 | Global | Common | → MS 210 |
| 023 / 023 C / 023 L | 1990–02 | Global/EU | Common | → MS 230 |
| 025 | 1991–02 | Global | Very Common | → MS 250 |
| MS 210 | 2002–08 | Global | Very Common | |
| MS 230 | 2002–12 | Global | Very Common | |
| MS 250 | 2002→now | Global | Current / Extremely Common | Benchmark; one of most-sold Stihls ever — still sold |
Data confidence
Provenance for this family's figures — verify anything tagged estimated, approx, or stale-risk against STIHL spec sheets.