The Yamaha YZ450F is the ultimate open class motorcycle, and the reigning pro Motocross and Supercross champ. The 2023 YZ450F raises the bar even higher, with best-in-class power delivery and suspension performance. It boasts even more power, better handling, less weight, a new more narrow body with improved ergonomics, and a next-generation Power Tuner app. The YZ450F is a single cylinder, four-stroke motorcycle with a 449.0 ccm engine and titanium valves. It has a 13.0:1 compression ratio and a 97.0 x 60.8 mm bore and stroke. The fuel injection is Mikuni® and the ignition is TCI: Transistor Controlled Ignition. The YZ450F has a wet sump and liquid cooling, with a 5-speed transmission and chain final drive. The frame is a bilateral beam frame, aluminum, with a 26.9° rake and 119 mm front suspension travel. The KYB Speed-Sensitive System, inverted fork is fully adjustable, with 310 mm front suspension travel. The rear suspension is a KYB® single shock, fully adjustable, with 315 mm rear suspension travel. The YZ450F has Dunlop® Geomax MX33 tires, a long, two-tone, motocross-style seat, and weighs 108.9 kg (240.0 pounds). The motorcycle has a 965 mm (38.0 inches) seat height, 1275 mm (50.2 inches) wheelbase, 2179 mm (85.8 inches) length, 831 mm (32.7 inches) width, and 351 mm (13.8 inches) ground clearance. The fuel tank capacity is 6.06 litres (1.60 US gallons), with a 1.00 litres (1.06 US quarts) oil capacity. The YZ450F comes in Team Yamaha Blue and has an electric starter. It has a 30 Day Limited Factory Warranty and features traction control, launch control, and Power Tuner via smartphone. The recommended oil is 10W-30 or 20W-50, with DOT 4 brake fluid and NGK CPR8EA-9 spark plugs. The Yamaha YZ450F is a top-of-the-line motorcycle that delivers unparalleled power and performance for motocross and cross-country riding.