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MX400B

Category: Motocross
Manufacturer: Yamaha show models
Hits: 811
Year 1975
Engine Class 400
VIN Prefix 510
Known VIN Range (Vehicle ID Numbers) 000101 to 009096
Tank Color(s) White W/Comp. Yellow
Country of Sale USA
Bore (MM) 85
Stroke (MM) 70
Displacement (CC) 397
Compression Ratio (to 1) 7.57
BHP @ RPM 38.76 @ 8,000
Torque (kgm) @ RPM 3.92 @ 7,000
Autolube Injection? No
Engine Cooling Air
Carburetor Model VM38SS
Ignition Type CDI (Electronic)
Ignition Timing MM (BTDC) 2.7
Primary Drive Gearing 2.67
Final Drive Gearing (Sprockets) 50/14
Box Gearing First 2.25
Box Gearing Second 1.68
Box Gearing Third 1.26
Box Gearing Fourth 1.0
Box Gearing Fifth 0.79
Fuel Capacity (L) 8
Gearbox Oil Capacity 1.0
Fork Oil Capacity (CC/Fork Leg) 190
Front Tire (stock) 3.00 x 21
Rear Tire (stock) 4.60 X 18
Front Brake Type Drum
Rear Brake Type Drum
Rear Suspension Mono Shock
Front Suspension Travel (mm) 190
Rear Suspension Travel (mm) 90
Rake (degrees) 31
Trail (mm) 139
Overall Width (mm) 985
Ground Clearance (mm) 235
Wheelbase (mm) 1,415
Dry Weight (kg) 103

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