Looking for a residential zero-turn mower with commercial features and performance? You’ve found it in the new Quest X-Series. The powerful Kohler engine, upgraded 48-inch UltraCut Series 3 cutting deck and heavy-duty Hydro-Gear transmission enable Quest X-Series to cut at up to 8 mph. When combined with the incredible maneuverability of the low center of gravity frame design and the smooth rolling of the large drive and caster tires, Quest X-Series offers an unbeatable combination of performance and value.