Additional Features

• ADJUSTABLE HANDLEBAR MOUNTS: The 4-position adjustable handlebar mounts are rubber mounted to improve comfort and reduce handlebar vibration.
• EMBEDDED GRAPHICS: Yamaha’s unique embedded graphics are built into the bodywork for extended durability, resisting both peeling and damage, with new styling for 2017.
• RACE WINNING DETAILS: The YZ450F includes top-spec details, including 1-1/8” aluminum tapered handlebars, wide 55mm footpegs, a quick-adjust clutch perch, stylish black rims and gold chain.

Chassis / Suspension

• BILATERAL BEAM ALUMINUM FRAME: Yamaha’s renowned aluminum bilateral beam frame that features overall dimensions that are roughly the same as the frame of the YZ250F. This gives the YZ450F a compact chassis that provides the most instinctive handling in the 450 motocross class.
• CLASS-LEADING SUSPENSION: Industry-leading, fully adjustable KYB® spring-type fork with speed sensitive damping provides exceptional balance between handling and bump absorption, for race-winning handling performance. The linkage type rear suspension features a KYB® shock with ideal damping characteristics to match the compact chassis.
• 270MM FRONT BRAKE: Large 270mm front disc brake coupled with aggressive pad material offers outstanding braking performance and machine control, with exceptional stopping power and controllability. Out back, a new, more heat-resistant rear rotor boosts brake durability.

Engine

• ADVANCED ENGINE DESIGN: The revolutionary rearward-slanted-cylinder design of the YZ450F moves the engine and rotational mass of the cams towards the center of the bike to provide class-leading mass centralization. Concentrating the motorcycle’s key components—engine, fuel tank and exhaust system—toward the center of the motorcycle achieving light and nimble on track handling performance. Additionally, providing a straight shot, downdraft intake and a symmetrical port layout for smooth controllable power delivery throughout the RPM range.
• GYTR® POWER TUNER READY: Accessory GYTR® Power Tuner lets owners adjust air/fuel mixture and ignition timing maps to match engine performance characteristics to the rider and track conditions in a matter of seconds with the push of a few buttons, as well as monitor engine diagnostic codes.
• LAUNCH CONTROL SYSTEM (LCS): LCS optimizes engine output for quicker, smoother race starts every time, boosting controllability out of the gate allowing you to get to the first turn first.
• ADVANCED FUEL INJECTION: The engine breathes through a 44mm throttle body fed by a high pressure electric pump to ensure optimum fuel atomization and power for a wide range of riding conditions, instantly adjusting the air/fuel mixture for changing altitude or temperature.
• WRAPAROUND REAR-POSITIONED EXHAUST LAYOUT: An innovative exhaust pipe design is adopted to increase mass centralization and improve power development characteristics. This layout moves the rear end of the exhaust pipe farther forward and enables a muffler position close to the center of the mass.

New for 2017

• SIMPLIFIED SERVICING: Redesigned air cleaner over helps prevent contact with the quick-release quarter-turn Dzus® air box fasteners, providing tool-less access to the air filter that’s positioned at the front of the bike avoiding roost from the rear wheel.
• NEW REAR BRAKE ROTOR: Updated rear brake rotor material that has better heat resistance providing better durability and braking feel.
• NEW DUNLOP® MX3S® TIRES: For 2017, the YZ450F features soft-to-intermediate terrain tires, the Dunlop® MX3S®.
• NEW GRAPHICS: Stylish new graphics treatment brings the YZ450F even closer to that pure factory racer look, that are molded directly into the plastic, for extended durability, resisting both peeling and damage.