Measurements of the Akrapovic EVOLUTION system on the KAWASAKI ZX-10R (without muffler insert):
Power & Torque: The power increase with the Akrapovic system is substantial, and can be seen from 4000 rpm right to the top of the range. At 13300 rpm we measured 183.7 HP, with a max. power increase of 8.9 HP at 9130 rpm. The system’s effect on the torque and power curve is huge and strongest at midrange rpm. The main increase starts at around 5000 rpm and continues right into the over-rev range.