Poulan Pro 461ZX 19HP Dual Hydro-Gear Zero Turn Riding Lawn Mower, 46-Inch (Discontinued by Manufacturer) 19HP Briggs & Stratton Professional engine 46-Inch Cutting Width Dual Hydro-Gear EZT drive system Electric Clutch Blade Engagement - 2 blades 11 x 4 - 5 inch front caster tires and 18 x 8.5 - 8 inch turf rear tires