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Technical Specifications of Yamaha AS1
Introduced in 1967, this miniature version of a motorcycle shared many features and parts from the FS1E moped, but twisted into a roadster design. It was Yamaha’s first 125cc twin cylinder sports model. The Yamaha AS1 had an innovative 5-port engine, twin carburetors, the Yamaha famous Autolube oil supply pump and 5-speed transmission.
There were two variations introduced. The standard one for “commuter-style” use and a scrambler version with high-mount exhausts.
Model: Yamaha YAS1 - Yamaha AS1 125
Year: 1967 & 1968
Motorcycle Type: Sport & Touring
Dry weight: 98.0 kg
Ground clearance: 150 mm (5.9 inches)
Fuel tank size: 9.46 litres (2.50 gallons)
Colour options: Blue or
Red
Engine, Intake & Transmission
Displacement: 125 cc
Engine: Twin, two-stroke
Top speed: 120.7 km/h (75.0 mph)
Fuel system: Carburettor
Fuel control: Port control
Ignition: Points
Lubrication system: Autolube
Cooling system: Air cooled
Gearbox: 5-speed
Transmission type: Chain
Exhaust system: Twin chrome
Chassis, suspension, brakes and wheels
Frame type: Steel tube
Front suspension: Telescopic forks
Rear suspension: Swing arm
Front brakes: Drum brake - single leading shoe
Rear brakes: Drum brake
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The parts you buy from this website will be purchased from Sumo Rubber Ltd.
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