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Comparison
2 models side by side, spec by spec.
Independent reference database. Specs are compiled from manufacturer sources and normalized for comparison; verify with the manufacturer or dealer before purchase.
Best suited for
Each model's factual fit, from its duty class and key specs — no winner declared.
- Stihl MS 271 FARM BOSS 20" Farm & ranch occasional firewood, limbing, fence-line clearing, and storm cleanup (50 cc · 20-in bar)
- Stihl MS 291 Farm & ranch occasional firewood, limbing, fence-line clearing, and storm cleanup (56 cc · 18-in bar)
Specs verified against the manufacturer spec sheet on — stihlusa.com.
Specs verified against the manufacturer spec sheet on — stihlusa.com.
| Spec | Stihl MS 271 FARM BOSS 20" | Stihl MS 291 |
|---|---|---|
| Engine | ||
| Displacement | 3.06 cu in (50.2 cc) | 3.39 cu in (55.5 cc) |
| Engine Power | 3.5 hp | 3.8 hp |
| Fuel Capacity | 0.13 gal (0.5 L) | 0.13 gal (0.5 L) |
| Power | 2.6 kW | 2.8 kW |
| Power-to-Weight | 2.2 kg/kW | 2 kg/kW |
| Bar & Chain | ||
| Chain Gauge | 0.063 in | 0.050 in |
| Chain Pitch | .325" | .325" |
| Guide Bar Length | 20 in (508 mm) | 17.99 in (457 mm) |
| Oil Capacity | 8.12 fl oz (240 mL) | 8.12 fl oz (240 mL) |
| Dimensions & Weight | ||
| Length | 17.72 in (450 mm) | 17.72 in (450 mm) |
| System Weight | 14.84 lb (6.73 kg) | 15.45 lb (7.01 kg) |
| Weight | 12.35 lb (5.6 kg) | 12.41 lb (5.63 kg) |
| General | ||
| Power Source | gas | gas |