Die casting instead of gravity casting for the cast-aluminum sections of the ZX-14’s main frame have also resulted in lighter parts. The ZX-10R superbike has been completely revamped once again, with an all-new engine tuned for greater high-rpm performance without sacrificing midrange. The bike’s new ignition system is equipped with a kind of traction control, too, assisting with torque management by monitoring throttle opening, gear position and rate of rpm change, then retarding ignition timing to reduce torque when sudden unwanted rpm spikes are detected.  ZX-10R also has a

heavily revised frame and suspension, including a fully adjustable 43mm inverted fork and a new swingarm that uses pressed instead of cast beams. Rear suspension changes include dual (low- and high-speed) compression damping on the fully adjustable rear shock for better fine-tuning, a new mounting spot for the Uni­Trak linkage and a reshaped swingarm with a top-mounted brace. Wheels and brakes are all-new as well.

The bike’s 249cc parallel twin has been returned for smoother and more predictable power delivery, and Kawasaki says it offers more low- and midrange torque thanks to revisions to its dual overhead camshafts and a new two-into-one Ninja 250R exhaust system. Larger 17-inch wheels improve handling and stability, and there’s a larger 290mm front brake rotor gripped by a more powerful two- piston caliper. Like Kawasaki’s other sport models, the Ninja 2508 is fitted with petal discs for efficient heat dissipation.

Kawasaki’s already got a 2009 model in the lineup, too, the new KLX250S, which has been improved and revised for smoother power, better handling and braking, more stability and nicer looks.