Yamaha has conceded that its new V4 MotoGP engine is struggling for power after the opening pre-season test of the year at Sepang. The Iwata-based brand was in the headlines for all the wrong seasons in Malaysia, where it finished last among MotoGP’s five manufacturers and more than a second off the outright pace. On the opening day, Yamaha’s star rider Fabio Quartararo broke his finger ...Keep reading