Updated Kawasaki superbike family targets increased track aggression. Kawasaki have updated the ZX-10R for 2019 with even more power in a bid to retain the World Superbike title, equipping it with a valvetrain that will allow it to rev harder, for longer. But while this might be good for serious track riders and racers, don’t expect it to transform the bike’s on-road performance. The key change for 2019 is the adoption of finger-follower valve actuation, replacing tappet-style valves. First appearing on a superbike in BMW’s 2010 S1000RR, and most recently Suzuki’s GSX-R1000, finger-follower valve actuation is lighter, reducing the mass of the system by 20%. This allows the motor to spin-up faster and sustain high rpm more reliably. The design also means the valves within a larger range of movement, enabling the use of more aggressive cams, have contributed to a 3bhp power gain for 2019. The new valve train is common to all three models, while the 500-bike limited edition ZX-10RR gets