Technical Specifications
 1982 Yamaha RZ125
Engine
Engine type Liquid cooled, two stroke, single cylinder.
Bore x Stroke 56.0 х 50.6 mm
Displacement 123 cc
Valves 2 valves per cylinder
Compression ratio 6.4:1
Max Power 20 hp @ 9500 rpm
Max Torque 1.5 kgf-m @ 9250 rpm
Fuel system 24mm Mikuni carb
Transmission 6-speed
 Final drive Chain
Clutch Wet, multi-plate type
 Ignition type
Starting system Kick starter
Lubrication Wet sump
 Intake system 
Spark plug
Battery
Gear ratios 
Dimensions
Frame type
 Rake
Overall length
 Overall width
 Overall height
 Wheelbase
 Seat height
Ground clearance
Weight
Fuel capacity 12.7 litres
Color White
Suspension (front) Telescopic fork
Suspension (rear) Monocross linkage 6-way preload adjustment
Tyre (front) 80/100-S18
Tyre (rear) 90/100-S18
Brake (front) Single disc brake 245mm
Brake (rear) Drum brake 130mm 
 
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