Classic · 1971
YAS1
Technical Overview
1971 Yamaha YAS1 Technical Analysis & Specification Breakdown
Positioned in Yamaha's classic motorcycle lineup, the 1971 Yamaha YAS1 utilizes a 125 cc (7.6 cu in) air-cooled twin, two-stroke layout.
Engine
Displacement 125.0 ccm (7.63 cubic inches)
Engine Type Twin, two-stroke
Engine Details Twin, two-stroke
Fuel System Carburettor
Cooling Air
Transmission
Final Drive Chain (final drive)
Performance
Exhaust Double stainless steel pipes
Wheels & Brakes
Front Tyre 2.25-17
Rear Tyre 2.50-17
Rear Brakes Expanding brake (drum brake)
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