Starting with the 1352cc heart of the ZX-14, Kawasaki took 45 horsepower off the top with new 40mm throttle bodies (6mm smaller) and less compression (10.7:1 vs. 12.0:1). Fear not: An elegantly simple hydraulic Variable Valve Timing (VVT) system maintains midrange power. Instructions from the engine ECU change the rate and direction of flow to the VVT actuator, which can advance or retard intake timing up to a maximum of 23.8 degrees. Maximum effect is at 4000-6000 rpm. And by optimizing cylinder filling throughout the rev range, VVT lowers emissions, as well. New atomizing injectors use 12 75-micron orifices instead of 10 at 60 microns for a better burn. There's no exhaust valve in the 4-2-1 system. No 02 sensors either. Just a pair of 200-cell catalyzers in that bazooka muffler.