Cub Cadet Ultima Series Z2 46 46-in. 21.5 HP*/726cc Zero-Turn Lawn Mower with AeroForce Fabricated Deck." Answer the call of large properties and varying terrain with the Ultima Series. The Cub Cadet Ultima Series Z2 46 46-in. 21.5 HP*/726cc Zero-Turn Lawn Mower with AeroForce Fabricated Deck and premium comfort features is engineered to provide the ultimate mowing experience. Built for uncompromised performance, durable strength, and proven results this mower helps you tackle hills and slopes up to 15-degrees. Save time mowing with an Ultima Series zero-turn, 25% faster than a tractor** *As required by Kawasaki, horsepower tested in accordance with SAE J1995 and rated in accordance with SAE J2723 and certified by SAE International. **Mowing identical grass conditions using a 42-inch Ultima Series zero-turn mower at a speed of 7 MPH vs. a Cub Cadet 42-inch lawn tractor at a speed of 5 MPH.Backed by a limited 3 year no hour limit warranty, a lifetime limited deck warranty, and a lifetime limited frame warranty.