Akrapovic Exhaust System Suzuki GSX-R750 2006-2007 The Akrapovic Racing and Evolution systems are designed for riders in road racing closed course competition and for those who attend track days and expect the maximum from their exhaust system and know how to take advantage of it. This exhaust systems are within strict FIM and AMA supersport and superstock regulations. The Racing and Evolution open systems make the Suzuki substantially more responsive, and the hexagonal muffler also provides a great visual modification. Evolution System is made entirely of exclusive high grade titanium Racing System uses stainless steel header tubes and link pipe Power Torque The Akrapovic exhaust system increase the responsiveness of the Suzuki and fills out the power and torque curves. The increase in torque starts already at around 3000 rpm, while the power curve increase starts around 5400 rpm and leads all the way to the top of the range. At 13400 rpm we measured a massive 141 HP. Click here to view performance figures for this part NOTE Please check local laws before purchasing. Some modifications may be prohibited in some states.