The STIHL Carbon Concept vaunts a sensational power-to-weight ratio of 1.11 kg/kW. Powered at 5.4 kW, the STIHL Carbon Concept weighs only 6.0 kg (without fuel, without cutting attachment). This low weight is achieved by the use of ultra-light materials, principally carbon. Examples include the carbon handle, the titanium muffler, the crankcase made from a special, high-strength diecast magnesium alloy, and the tank housing and handle housing, which are made from long glass fiber reinforced plastic.