MotoGPさんのインスタグラム写真 - (MotoGPInstagram)「The first new piece has been spotted! 👀 @yamahamotogp have unveiled this new, longer exhaust! It's possible that Yamaha are looking for greater mid-range power 💪 With their well-documented engine troubles, one way to preserve engine life is to find greater mid-range power so that the riders aren't so reliant on the strong power higher in the rev range, where the engine is being stressed the most! ⚠️ We'll keep you updated with what feedback from the riders on Yamaha's new exhaust as we get it 👍 #MisanoTest」9月15日 21時39分