The STIHL MS400 C-M, a saw with the worlds first magnesium piston

The new MS 400 C-M is the world’s first chainsaw with a magnesium piston.

According to STIHL the MS 400 C-M chainsaw has been designed with professionals in mind and offers STIHL’s highest performance in the 60cc class. The chainsaw has more displacement, more power, more torque, and only weighs a little more compared to the STHIL MS 362 C-M.

The larger displacement of 66.8cc in the new 2-MIX engine provides 4kW of power and 4.1 Nm of torque. The MS 362 C-M produces 3.5kW of power and 3.5 Nm of torque. The magnesium piston is also 14% lighter than the aluminum piston in the MS 362 C-M.

The STIHL MS 400 C-M has an impressive power-to-weight ratio of 1.45 kilograms per kilowatt.

The saw retails for £1,080.00 with a 16-inch bar according to STIHL’s European website.

This saw is not available in the United States yet.

Technical data

Displacement cm³66.8
Power output kW/bhp4/5.4
Weight kg 1)5.8
System weight kg 2)6.88 / 7.07 / 7.11
Power-to-weight ratio kg/kW1.4
Sound pressure level dB(A) 3)107
Sound power level dB(A) 3)118
Vibration values left/right m/s² 4)3.5/3.5
Oil pumpAdjustable oil filter
Tank volume l0.60
Chain pitch3/8″
Chain tensioningLateral chain tension
Sprocket – number of teeth7 Z
FilterLong-term filter system (pre-separation) / cartridge filter HD2
Bumper spikeSteel claw
Oil tank volume cm3325
SprocketRing sprocket
Anti-vibration systemStandard AV-System
Filler capTool-free filler cap
Starting systemElastoStart / Recoilless Ignition / single-lever control / decompression valve
EPA Certified fuel consumption l/h2.265
CO2 g/kWh656