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Technical Specifications 2004-YZ450F

Engine
Engine typeLiquid cooled, 4-stroke, single cylinder, DOHC 5 valves
Displacement449 cc
Bore x stroke95.0 x 63.4 mm
Compression ratio12.5 : 1
Maximum power44.1 kW (60.0 HP) @ 9,000 rpm
Maximum torque52.9 Nm (5.4 kg-m) @ 6,500 rpm
Lubrication systemDry sump
Fuel SystemCarburettor (FCR39)
Clutch typeWet, multiple disc
Ignition systemC.D.I.
Starter systemKick
Transmission systemConstant mesh, 4 speed
Primary reduction ratio2.818
Secundary reduction ratio3.357
Final transmissionChain
Ratios gearbox 1st1.929
Ratios gearbox 2nd1.563
Ratios gearbox 3rd1.278
Ratios gearbox 4th1.05
Chassis
ChassisSemi-double cradle steel frame
Front suspension systemTelescopic fork
Front wheel travel300 mm
Rear suspension systemSwingarm (linked type monocross)
Rear wheel travel315 mm
Caster angle27.2°
Trail118 mm
Front brakeSingle disc, Ø 224 mm
Rear brakeSingle disc, Ø 219.8 mm
Front tyre80/100-21
Rear tyre110/90-19
Dimensions
Overall length2,171 mm
Overall width827 mm
Overall height1,303 mm
Seat height995 mm
Wheelbase1,485 mm
Minimum ground clearance371 mm
Fuel tank capacity (reserve)7 L
Engine oil tank capacity1.2 L

Specifications and appearance of Yamaha products shown here are subject to change without notice and may vary according to requirements and conditions. For further details please consult your Yamaha dealer.

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