Yamaha AS 31971 forward

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Air cooled, 125cc, 2, 2-stroke

Power: 15.91 HP (11.7 kW) @ 9800 rpm
Final drive: Chain
Top speed: 78.91 mph
Curb weight: 231.5 lbs
Category: All-rounder
Tags: Classic bike, Naked
Engine and transmission
Engine type: 2 cylinders, 2-stroke
Displacement: 125 cc (7.64 cubic inches)
Bore × stroke: 1.69 inch × 1.69 inch (square)
Cooling system: Air cooled
Power: 15.91 HP (11.7 kW) @ 9800 rpm
Throttle: Cable operated
Fuel and ignition
Sparks per cylinder: 1
Fuel supply system: Carburetor
Compression: 7:1
Engine mounting: Vertical
Gear box: Manual 5-speed
Clutch: Wet, multiple discs, cable operated
Final drive: Chain
Curb weight: 231.5 lbs
Chassis and suspension
Frame type: steel, Single cradle frame
Suspension: Cartridge
Brake: Drum
Suspension: twin shock, Swingarm
Brake: Drum
ABS available: No
Power-to-weight ratio: 0.11 KW/lbs (8.97 lbs/HP)
Top speed: 78.91 mph
Fuel capacity: 2.38 gals
Number of riders: 2 persons

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