The STIHL RZ 972i is built for hard work and operator comfort featuring an extra-wide, 72″ deck and four-wheel innovative suspension system with mowing deck height compensation that create a smooth, stable ride. The Vanguard® Electronic Fuel Injection (EFI) engine with Oil Guard™ provides fuel efficiency and extends maintenance intervals. Built with heavy-duty, commercial grade materials and components, this mower is made to take on tough jobs.