2016 YAMAHA YFZ450R

The 2016 Yamaha YFZ450R is the most technologically advanced sport ATV on the market today. It combines a high-tech, quick-revving, titanium five-valve, 449cc fuel-injected engine with a lightweight, professional-caliber cast aluminum/steel chassis.

POWERFUL MOTOR The fuel-injected 449cc engine has superb power characteristics. Power delivery is smooth and strong off the line, with lots of midrange to top-end power. compact counterbalanced engine The crankcase holds a crankshaft that’s ready to handle the increased demands of the racer, as well as a counterbalancer to reduce vibration. The crankcase also houses the oil tank, which helps to centralize mass for unmatched handling while making maintenance easier. Tuned Camshafts Camshafts have been revised to help maximize the engine’s impressive power output from off the line all the way up to the top end.

ADVANCED FRAME The YFZ450R is motocross-ready. The weldless frame is designed from lightweight aluminum with a tension-steel bottom frame that lets the engine sit lower for excellent mass centralization. Suspension components and settings reduce weight while providing light, sharp handling and rider comfort.

ADVANCED CYLINDER HEAD The 449cc engine uses titanium five-valve cylinder head technology designed to deliver abundant power in the mid-range to top end, with more “hit” feeling right off idle. The higher compression ratio further improves overall engine performance.

FUEL INJECTION The 2016 Yamaha YFZ450R incorporates Yamaha Fuel Injection for precise fuel delivery. With a big 42mm Mikuni® throttle body and 12-hole injector, this system provides exceptional atomization of the fuel for maximum power. The system also includes ISC (Idle Speed Control) for easy, reliable start-up and warming.

ENGINE Type: 4-stroke, DOHC titanium 5-valve
Displacement: 449cc
Bore x stroke: 95 x 63.4mm
Cooling: Liquid-cooled with a fan
Compression ratio: 11.8:1
Fuel system: Yamaha Fuel Injection, 42mm throttle bodies
Starting system: Electric