Poulan Pro 541ZX Dual Hydro-Gear Zero Turn Riding Lawn Mower, 54-Inch (Discontinued by Manufacturer) 22HP Briggs & Stratton Professional engine 54-Inch Cutting Width Dual Hydro-Gear EZT drive system Electric Clutch Blade Engagement - 3 blades 12 x 4 - 5 inch front caster tires and 18 x 9.5 - 8 inch turf rear tires