The MT-09 that Yamaha pulled out of the bag back in 2013 arguably saved the brand from extinction. Eight years on, with hundreds of thousands of sales to its name, the time had come to repay that debt to this naughty naked with a ground-up evolution. Of course, there are other reasons for the MT’s redesign, with a core factor being the introduction of Euro5. Unfortunately, no matter how successful a bike is, no machine is safe from the ball-ache of legislation, but Yamaha saw this forced factor as an opportunity to take the MT back to the drawing board and make it bigger, better and even more of a head-case. Aside from the odd nut and bolt, everything about this bike is new, with the salient component, the engine,…