2024 Stihl MS 391

• Bar length: 40-63 cm
• Bar length: 16-25 in
• Displacement: 64.1 (cc)
• Displacement: 3.91 cu-in
• Power output: 3.3 / 4.5 (kW/bhp)
• Engine power: 4.4 bhp
• Weight: 6.2 / 13.7 (kg / lbs) 1)
• Power-to-weight ratio: 1.9 kg/kW
• System Weight: 7.34 / 7.5 / 7.64 / 7.96 kg 2)
• Sound pressure level: 106 dB(A) 3)
• Vibration level, left: 4 m/s² 4)
• Vibration level, right: 4 m/s² 4)
• Saw chain pitch: 3/8 "