Which technological feature does Yamaha include in their FZ series for improved efficiency?

The FZ series from Yamaha is known for incorporating advanced engineering that enhances the overall efficiency and performance of the motorcycle. In this context, the most notable feature that contributes to improved efficiency in the FZ series is the electronic fuel injection system. This technology optimizes the air-fuel mixture delivered to the engine, enhancing fuel combustion and efficiency.

By accurately controlling the amount of fuel and air entering the engine, electronic fuel injection not only improves fuel economy but also increases power output and reduces emissions, making it an essential technology for modern motorcycles.

While features like the anti-lock braking system and adjustable suspension certainly enhance safety and ride quality, and the slipper clutch aids in smoother downshifting, they do not directly contribute to efficiency in the same manner as electronic fuel injection does.