Over the twelve years of its life span, the Yamaha YZF R15 has only gotten better with each update. Now, for 2021, the company has launched the fourth version of the R15 with certain changes that promise to make it even more extraordinary. We spend a brief amount of time with the new R15 V4 to tell you our first impressions. Or to make it easier for you, we tell you five things that truly work in the new R15's favour, and two things that don’t.