The Engine

The STIHL 4-MIX® engine puts you in first place with exceptional power, unparalleled performance and high fuel efficiency.

With the introduction of the STIHL 4-MIX® engine, STIHL unveils the outdoor power plant of the future. This patented engine design includes the best of 2-stroke and 4-stroke technologies combined. The new STIHL 4-MIX® engine offers more horsepower, more torque and less vibration than its 2-stroke counterpart.

Built with the patented STIHL lubrication system, it runs on standard 50:1 fuel-mix, thus eliminating the need for a separate oil chamber. Its compact design with fewer parts, creates less frequent service needs than a typical 4-stroke engine. And also weighs less than the typical 4-stroke engine.

The STIHL 4-MIX® not only meets the Environmental Protection Agency (EPA) “Phase 2” emissions standards effective January 2005, but also measures up to the regulations set forth by the California Air Resources Board (CARB).

Professionals will appreciate the fast acceleration, pleasant sound, high torque and fuel efficiency with fewer “pit” stops. So, when the day is done and the work complete, you'll finish in first place with the STIHL 4-MIX® engine.