Designed to enable enjoyable, sporty riding, the J300’s a 299 cm3 liquid-cooled SOHC 4-valve Single engine provides plenty of power to move two. Taking into account coolant temperature, air intake temperature, throttle position, air intake pressure, vehicle speed and crankshaft angle, the fuel injection system (which uses a 34 mm Keihin throttle body and a 16-bit CPU) automatically meters out the ideal amount of fuel for extremely stable power delivery – regardless of the conditions. And of course, setting adjustments are not necessary, and starting is hassle-free.