The Akrapovic EVOLUTION systems are designed for riders who attend trackdays and expect the maximum from their exhaust system and know how to take advantage of it. This exhaust systems comply strict exhaust gas and noise emission regulations. The Racing and Evolution street legal systems makes the Aprilia superbike substantially more responsive. Hexagonal mufflers also provides a great visual and sound modification.
    
Performance

Measurements of the Akrapovic EVOLUTION system on the APRILIA RSV MILLE (with muffler insert):

Power & Torque: the Akrapovic exhaust system increase the responsiveness of the Aprilia and fill out the power and torque curves. The increase in power and torque starts already at around 3000 rpm and leads all the way to the top of the rpm range. At 10300 rpm we measured a massive 129.1 HP on rear wheel and max. increase of power 9.4 HP at 10550 rpm.