Aimed at owners looking for increased performance and weight reduction, these high-grade stainless-steel headers have a larger tube diameter than standard and, unlike the standard version, there is no catalytic converter. Developed for use on closed-course competition circuits only, this racetrack-oriented part reduces weight by 2.9 kg (56.8%) over the stock headers. When tested on the Akrapovic dyno in combination with a Slip-On Line (Titanium) and compared to an Aprilia Tuareg 660 with a standard stock system, it produced an additional 4.2 kW (5.7 hp) of power at 9,500 rpm and a torque gain 4.9 Nm at 4,800 rpm, while offering a deep racing sound. No remapping is needed for this plug-and-play upgrade. When installed it renders the EC/ECE type-approval of Slip-On Line (Titanium) invalid. THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.