22 June. Monday 2026
Yamaha Bws - 2012 Specifications and Reviews
The 2012 Yamaha BWs is a lightweight 50cc scooter designed for urban commuters and novice riders seeking practical, affordable mobility. Its air-cooled two-stroke engine delivers modest power with an automatic transmission for easy operation. Known for reliability and fuel efficiency, it excels in congested city environments where maneuverability and low maintenance costs matter most.
Engine and Transmission Specifications | |
| Transmission type,final drive | Belt |
| Gearbox | Automatic |
| Cooling system | Air |
| Lubrication system | Separate lubrication |
| Ignition | CDI |
| Fuel system | Carburettor. Gurtner |
| Bore x stroke | 40.0 x 39.2 mm (1.6 x 1.5 inches) |
| Compression | 7.2:1 |
| Torque | 3.60 Nm (0.4 kgf-m or 2.7 ft.lbs) @ 6000 |
| Power | 3.22 |
| Engine type | Single cylinder, two-stroke |
| Capacity: | 49.20 ccm (3.00 cubic inches) |
| Category | Scooter |
| Year | 2012 |
| Model | Yamaha BWs |
Brakes, suspension, Frame and wheels | |
| Rear brakes diameter | 110 mm (4.3 inches) |
| Rear brakes | Expanding brake (drum brake) |
| Front brakes diameter | 180 mm (7.1 inches) |
| Front brakes | Single disc |
| Rear tyre dimensions | 150/80-10 |
| Front tyre dimensions | 120/90-10 |
| Rear suspension travel | 70 mm (2.8 inches) |
| Rear suspension | Unit swing |
| Front suspension travel | 70 mm (2.8 inches) |
| Front suspension | Telescopic fork |
| | |
Physical measures and capacities | |
| Fuel capacity | 5.30 litres (1.40 gallons) |
| Wheelbase | 1,172 mm (46.1 inches) |
| Ground clearance | 124 mm (4.9 inches) |
| Overall width | 675 mm (26.6 inches) |
| Overall length | 1,685 mm (66.3 inches) |
| Overall height | 1,049 mm (41.3 inches) |
| Seat height | 768 mm (30.2 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 82.0 kg (180.8 pounds) |
| | |
Other specs | |
| Factory warranty | 6 Month (Limited Factory Warranty) |
| Light | Dual 30W Krypton multireflector headlights and 21/5W brakelight |
| Instruments | Speedometer, odometer and fuel gauge |
| Wheelbase | 1,229 mm (48.4 inches) |
| Rear tyre | 25/10-12 |
| Front tyre | 25/8-12 |
| Rear wheel travel | 193 mm (7.6 inches) |
| Rear Suspension | Independent double wishbone |
| Front wheel travel | 147 mm (5.8 inches) |
| Front Suspension | Independent double wishbone |
| Driveline | Yamaha On-Command pushbutton; 3-way locking differential; 2WD, 4WD, locked 4WD; shaft drive |
| Fuel control | Single Overhead Cams (SOHC) |
| Bore x Stroke | 83.0 x 71.5 mm (3.3 x 2.8 inches) |
| Compression | 8.6:1 |
| Model | Yamaha Big Bear 400 4x4 IRS |
| Color options | Black, white, red |
| Starter | Electric & kick |
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