21.5hp Kawasaki engine Deck Size: 54″ Ideal for up to 3 acres with 7mph mowing speed Warranty: 3 Year/ 300 Hour The HUSTLER RAPTOR X 54″ RESIDENTIAL ZERO-TURN MOWER W/ KAWASAKI FR651 (21.5HP) is a powerful and reliable riding mower at a great value. The durable design and maintenance-friendly features make it perfect for everyday homeowners. Backed by a 3 year/300 hour warranty, its welded steel deck and wider stance ensure a professional-grade cut for a perfectly manicured lawn.