The Viper is built with a Hydro-Gear EZT transmission on the 46-inch mower, Hydro-Gear ZT-2800 transmission on the 50-inch and 60-inch mowers. The mower also offers the option to discharge, mulch or collect lawn clippings and an adjustable cutting height from 2 to 4.5 inches. With a three-year residential warranty, the Viper is the perfect residential riding lawn mower.