Yamaha WR155R 2021 specs
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| Displacement | 155.0 ccm (9.46 cubic inches) |
| Engine Type | Single cylinder, four-stroke |
| Engine Details | Forward-inclined cylinder |
| Power | 16.5 HP (12.0 kW)) @ 10000 RPM |
| Torque | 14.3 Nm (1.5 kgf-m or 10.5 ft.lbs) @ 6500 RPM |
| Compression | 11.6:1 |
| Bore X Stroke | 58.0 x 58.7 mm (2.3 x 2.3 inches) |
| Fuel System | Injection |
| Ignition | TCI |
| Lubrication System | Wet sump |
| Cooling System | Liquid |
| Gearbox | 6-speed |
| Transmission Type Final Drive | Chain (final drive) |
| Clutch | Wet, multipate |
| Valves Per Cylinder | 4 |
| Frame Type | Steel double cradle |
| Front Brakes | Single disc. Hydraulic. |
| Front Brakes Diameter | 240 mm (9.4 inches) |
| Front Suspension | Telescopic forks |
| Front Tyre | 2.75-21 |
| Rear Brakes | Single disc. Hydraulic. |
| Rear Brakes Diameter | 220 mm (8.7 inches) |
| Rear Suspension | Swingarm, (link suspension), Monoshock |
| Rear Tyre | 4.10-18 |
| Fuel Capacity | 8.00 litres (2.11 US gallons) |
| Ground Clearance | 245 mm (9.6 inches) |
| Overall Height | 1200 mm (47.2 inches) |
| Overall Length | 2145 mm (84.4 inches) |
| Overall Width | 840 mm (33.1 inches) |
| Seat Height | 880 mm (34.6 inches) If adjustable, lowest setting. |
| Oil Capacity | 1.10 litres (1.16 US quarts) |
| Weight Incl Oil Gas Etc | 134.0 kg (295.4 pounds) |
| Color Options | Yamaha Blue, Yamaha Black |
| Starter | Electric |
| Instruments | Digital |
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