High Quality Content by WIKIPEDIA articles! The Yamaha YBR 125 is a light motorcycle manufactured by the Yamaha Motor Company Ltd. of Japan. Most models are in the naked style of a standard motorcycle, though some have had some fairing. The YBR 125 has a single-cylinder, air-cooled, four-stroke engine, displacing 123.7 cc (7.55 cu in). This Yamaha Motor Corporation engine is balanced to minimise vibration, is lean-burn to reduce harmful emissions, and has low noise output. A catalytic converter is built into the exhaust pipe. It is essentially the same engine as found in the Yamaha XTZ trial model. It is a simple, reliable, low-maintenance, high-economy unit. This engine is also used by Sherco in their CityCorp 125 motorcycle. It can develop a maximum of 12 hp (8.9 kW) at 8,000 rpm, and maximum torque of 11.6 N·m (8.6 ft·lbf) at 6,500 rpm, but the European version with catalysator (2005) can develop a maximum of 10.3 hp (7.7 kW) at 7,600 rpm, and maximum torque of 10 Nm. It has electric start and CDI ignition.

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