Yamaha XF450USA2 Outboard Motor. 30-Inch Shaft 5.6-Liter V8 Digital Electronic Control Electronic Fuel Injection Electric Start Power Trim and Tilt Pearl White. The Yamaha XF450USA2 is the 30-inch shaft, Pearl White version of Yamaha's most advanced and powerful outboard. Delivering 450 horsepower from its 5.6-liter V8 platform, this engine is engineered for serious offshore boats requiring extended shaft length for deeper transoms. With its premium Pearl White finish, it adds a refined touch fo