| Attribute | Value |
| General |
| Production from | 1968 year |
| Make | Yamaha |
| Model | Yamaha AS1 |
| Category | Sport touring |
| Engine and transmission |
| Engine type | Twin, two-stroke |
| Valves per cylinder | Add |
| Fuel system | Carburettor |
| Engine details | Add |
| Displacement | 125 cm³ |
| Power | 10.9 kw |
| Max RPM | 8,500 rpm |
| Fuel consumption | Add |
| Cooling system | Air |
| Transmission type,final drive | Chain |
| Torque | 12.7 Nm |
| Bore | 43 mm |
| Stroke | 43 mm |
| Gearbox | 5-speed |
| Greenhouse gases | Add |
| Fuel control | Port control |
| Emission details | Add |
| Driveline | Add |
| Ignition | Points |
| Clutch | Add |
| Lubrication system | Autolube |
| Compression | 7.0:1 |
| Exhaust system | Twin chrome |
| Chassis |
| Front suspension | Telescopic |
| Rear suspension | Swinging arm, coil spring oil damper |
| Front brakes | Expanding brake (drum brake). single leading shoe |
| Rear brakes | Expanding brake (drum brake) |
| Diameter | Add |
| Frame type | Steel tube |
| Front tyre | -2.50-18 |
| Rear tyre | Add |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | Add |
| Rear wheel travel | Add |
| Trail | Add |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Add |
| Color options | |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,072 mm |
| Kerb weight | Add |
| Dry weight | 98 kg |
| Power/weight ratio | 0.1112 |
| Overall height | 1,011 mm |
| Overall length | 1,854 mm |
| Overall width | 671 mm |
| Seat height | Add |
| Alternate seat height | Add |
| Ground clearance | 150 mm |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Performance |
| Top speed | 120 km/h |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 9.46 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |