0% Financing | Learn More Whether you work on the farm or ranch or offer residential or commercial mowing services, STIHL RZ 500 Series zero-turn mowers are ideal for getting the most out of your mowing experience. With a choice of 52” or 60” mowing deck and a Briggs & Stratton® or Kawasaki carbureted engine, the STIHL RZ 500 Series gives users the power they need to mow like a pro. Commercial-grade Hydro-Gear® ZT-3400 transaxles offer a top forward speed of 10 mph and 5 mph in reverse for efficient cutting. An advanced four-wheel suspension system with mowing deck height compensation provides a comfortable ride and consistent cutting height. Create the ideal lawn with the customized options and exceptional performance of the STIHL RZ 500 Series.