2017 Yamaha YZ450F

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MULTI MOTO SHOOTOUT WINNER

Dirt Rider, MotorcycleUSA.com and VitalMX.com shootout winner. Huge power and industry-best suspension, even better for 2017.

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.

General Information

Manufacturer Yamaha
Model Year 2017
Model YZ450F
Model Code YZ450FHW
Color White / Red

Brakes/Wheels/Tires

Brakes

Front - 270 mm hydraulic single disc

Rear - 245 mm hydraulic single disc

Tires

Front - 80/100-21 Dunlop® MX3S®

Rear - 120/80-19 Dunlop® MX3S®

Dimensions

Length 85.8 in.
Height 50.4 in.
Width 32.5 in.
Weight Wet - 247 lbs.
Ground Clearance 13 in.
Wheelbase 58.3 in.
Seat Height 38 in.

Drivetrain

Transmission Constant-mesh; 5-speed
Final Drive Chain

Engine

Engine DOHC, 4-stroke, 4 titanium valves
Displacement 449cc
Bore x Stroke 97 x 60.8 mm
Compression Ratio 12.5:1
Fuel System Keihin® fuel injection, 44 mm
Fuel Capacity 2 gal.
Ignition TCI (Transistor Controlled Ignition)
Clutch Multi-plate wet
Cooling Liquid

Operational

Suspension

Front - KYB® Speed-Sensitive System inverted fork; fully adjustable; 12.2 in. travel

Rear - KYB® single shock; fully adjustable; 12.4 in. travel

Rake 27.25°
Trail 4.6 in.

Other

Additional Colors Team Yamaha Blue