Consisting of a black-coated, high-grade titanium muffler outer sleeve, with other parts fabricated from stainless steel Innovative technology has created an exceptional design for the bushes and flanges to meet the oval shaped header inlets: the header tubes have been tapered from oval to cylindrical form using hydroforming machinery With a huge 3.3 kg (41%) weight saving over the stock system and impressive power gains of 2.6 kW (3.5 hp) at 10,000 rpm and torque increase of +2.