The Z-Master 4000 HDX Pro has been engineered to last and built to reign. Redefine durability with a powerful 31 hp* Kawasaki FX921V engine, heavy-duty commercial grade hydros, flat-free semi-pneumatic caster tires, 24 in. Turf Tires, and a 60 in. 7-Gauge High-Strength Steel TURBO FORCE® cutting deck. Add in the hour meter, USB ports, phone holder, and a cup holder, you’ll have everything you need from the comfort of the deluxe suspension seat to help you power through long days.