The new Toro Z Master Z400 (pictured) and Z500 Series commercial zero-turn riders, designed for landscape contractors, feature many of the same attributes of the Toro Turbo Force deck, including rugged spindle assemblies, flexible discharge chutes, and high-strength, ¼-inch-thick blades that resist the flexing and rapid wear often associated with abrasive conditions. The Z400 Series is powered by a 21-hp Kawasaki engine on both the 48- and 52-inch models. The Z500 Series is available with a 27-hp Kohler Command Pro engine on 52- and 60-inch cutting decks.