Compare the Yamaha YZF-R15 V2 - [2015] vs Yamaha YZF-R125 Monster Energy Yamaha MotoGP Edition - [2019]. Find out which motorbike is the fastest, most powerful, lightest or has the biggest engine in our top trumps style comparison page. Find out which bike has the highest top speed or is the fastest accelerating, is it the Yamaha YZF-R15 V2 or the Yamaha YZF-R125 Monster Energy Yamaha MotoGP Edition. We'll leave it up to you to decide which is your favourite. These 2 bikes have been carefully filtered and paired together according to their similarly performing technical specifications.