It’s well known that the popular cycle for Japanese motocross bike manufacturers consists of three production years. The first year, an all-new machine is released. This is usually followed up by two years of subtle refinements before another major change can be expected. On this schedule, the 2019 Yamaha YZ450F is in its first year of refinement, having been debuted as a completely revamped machine in 2018.
In last year’s TransWorld Motocross 450 Shootout, the ’18 YZ450F was praised for many things, including its amazing powerplant, class-best suspension package, smartphone connectivity, and improved cornering characteristics. In fact, more than one tester liked the big blue machine best. There were some testers, however, that still felt that the YZ’s front-end was a bit vague, especially when exiting corners under power, and…