wedge combustion chambersquish in combstion chamberCombustionChambers 1bath tub combustion chamberhemispheric combustion chamberFuture Cars | Concept MotorcycleConstruction Training and Maintenance Manualshemispherical combustion chamberbathtub combustion chamberNew Yamaha motor sport models R400 and R600Yamaha showed its seriousness in strengthening the line-up variant of motor sport, by setting up new models R400 and R600. As reported by Motorcycle.com, magazine Young Machine divulge production plans two models of motor sport from the Japanese manufacturer. Previously Yamaha is also preparing a sport bike YZF 250. Yamaha YZF 250 New Yamaha motor sport models R400 and R600 This new motorsport model will be used by Yamaha to be a direct competitor Suzuki SV650, Kawasaki Ninja 650 or ER-6, and Honda CBR500R following the success of the three models of motor sport. Detail specifications of the engine has not been given in detail by Yamaha. While Yamaha YZF 250 itself was prepared by Yamaha for Asian markets such as India, Philippines, and Thailand.