The Yamaha R15 modification sport road speed machines
Yamaha R 15 modif 150 cc Both bikes are powered by single-cylinder, four-stroke, four-valve, fuel-injected 150cc engines that make about 20-22bhp. The R15's engine gets liquid cooling, while the FZ's engine is air-cooled. The bikes weigh about 130 kilos, and top speed should be around 140km/h. die-cast aluminium silikon (diasil) cylinder