Motor included : 40ELPT, Command Thrust, Electric Start, Long 20" Shaft, Power Trim, FourStrokeThe available Command Thrust gearcase is a feature no other outboard brand offers. The 4.9-inch-diameter Command Thrust case accommodates Merc’s top performance props up to 16-inches in diameter. More blade area and the lift provided by the larger case can improve the performance of boats. All these options plus the wide selection of Mercury props make it possible to really dial in optimal performance for any boat.