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.

Top Features

  • INNOVATIVE ENGINE DESIGN: The revolutionary rearward-slanted-cylinder design of the YZ450F™ allows for a straight down-draft intake with a symmetrical port layout for smooth controllable power delivery throughout the RPM range. This engine design also achieves unmatched mass centralization, for light and nimble handling.
  • 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.
  • IDEAL FRAME RIGIDITY BALANCE: The bilateral beam frame features a carefully chosen combination of forged, cast and extruded aluminum pieces, when combined produce superior cornering traction and unmatched lightweight handling.
  • 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.

General Information

Manufacturer Yamaha
Model Year 2017
Model YZ450F
Model Code YZ450FHL
Color Team Yamaha Blue

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

White / Red