Yamaha Motorcycles
YZ logo YZ400F 1998 Yamaha logo
Engine
Configuration Single cylinder watercooled four stroke Lubrication Dry Sump
Bore & Stroke 92 x 60.1mm Ignition
Capacity 399cc Charging system
Compression Ratio 12.5 : 1 Starter Kick starter
Maximum Power 55 bhp (40.4kW) Transmission Gear driven primary drive
Maximum Torque Gearbox Constant mesh 5-speed
Fuel 39mm Kehin FCR flat side Clutch Cable operated multi plate wet clutch
Chassis
Frame Semi double cradle, oil in frame Wheels
Dimensions  Weight: 107kg
Wheelbase: 
Length: 
Seat Height:
Tyres Front: 80/100-21 
Rear: 110/90-19
Front Suspension Telescopic, Coil Spring & Oil damper, 300mm travel Brakes Front Single disc, 240mm 
Rear Single disc, 220mm 
Rear suspension Monocross with 315mm (12.4") travel Fuel Capacity
Performance
Top Speed  
Acceleration

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