The Cub Cadet® Ultima Series ZTS1 Zero-Turn Lawn Mower with AeroForce™ Fabricated Deck and Synchro-Steer™ Technology is designed to deliver a premium cut with few clumps and stragglers, fine clippings and evenness. Synchro-Steer offers 4-wheel control designed to help provide stability for straight line mowing on hillsides and slopes up to 20-degrees. Dual hydrostatic transmissions engineered for quick ground speeds that leave your yard with a professional-quality finish.