2017 Yamaha YZ450F
Cross and Motocross

2017 Yamaha YZ450F Specifications

  • Updated: 2023-03-20

General information

ModelYamaha YZ450F

Engine and transmission

Displacement449.7 ccm (27.44 cubic inches)
Engine typeSingle cylinder, four-stroke
Engine detailsTitanium-valves
Bore x stroke97.0 x 60.8 mm (3.8 x 2.4 inches)
Valves per cylinder4
Fuel systemInjection. Yamaha Fuel Injection (YFI), Keihin 44mm
Fuel controlDouble Overhead Cams/Twin Cam (DOHC)
IgnitionTCI: Transistor Controlled Ignition
Lubrication systemWet sump
Cooling systemLiquid
Transmission typeChain (final drive)
ClutchWet multi-disc

Chassis, suspension, brakes and wheels

Frame typeSemi double cradle
Rake (fork angle)28.0°
Front suspensionKYB Speed-Sensitive System, inverted fork: fully adjustable
Front wheel travel310 mm (12.2 inches)
Rear suspensionMonoshock, adjustable preload and rebound damping
Rear wheel travel315 mm (12.4 inches)
Front tire80/100-21
Rear tire120/80-19
Front brakesSingle disc. Hydraulic.
Diameter250 mm (9.8 inches)
Rear brakesSingle disc. Hydraulic.
Diameter245 mm (9.6 inches)
SeatLong, two-tone, motocross-style seat
Weight incl. oil, gas, etc111.1 kg (245.0 pounds)
Seat height975 mm (38.4 inches) If adjustable, lowest setting.
Overall height1290 mm (50.8 inches)
Overall length2174 mm (85.6 inches)
Overall width826 mm (32.5 inches)
Ground clearance335 mm (13.2 inches)
Wheelbase1481 mm (58.3 inches)
Fuel capacity7.57 litres (2.00 US gallons)
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