The Z-Master 4000 HDX Pro is equipped with a powerful 31 hp* Kawasaki FX921V engine, heavy-duty commercial grade hydros, flat-free semi-pneumatic caster tires, 24” Turf Tires, and a 7-Gauge High-Strength Steel TURBO FORCE® cutting deck. Standard deluxe suspension seat, hour meter, USB ports, phone holder, and a cup holder.