Performance
Measurements of the Akrapovic RACING OPEN & EVOLUTION OPEN system on the Kawasaki ZZR 1400 (without muffler insert):
The power curve shows a huge increase over the stock performance figures. It is much more linear, which means the engine is pulling strong and consistently right from the lowest rpm to the highest part of the overrev range. We measured a max. power output on rear wheel of 183.4 HP and maximum increased power of 10.2 HP at 6800 rpm.
The same goes for torque, which is also increased through entire rpm range. The drop-outs in the stock curve are filled and like the power curve, there is a major increase from 2000 rpm on.