This exhaust is constructed with high-grade austenitic stainless steel and designed to be installed with The Akrapovic Slip-On Race Line (Titanium) exhaust system. The sound is further enhanced by a tuned resonator in the middle part of the link pipe, calculated to deliver a perfect sound experience, serving up a deep, rich, and sporty sound with no drone or streaming, to create a pure three-cylinder racing sound from the engine. It delivers power and torque increases of 8.5 kW (11.6 hp) at 6,150 rpm and 13.2 Nm at 6,150 rpm when using a combination of the Slip-On Race Line (Titanium) with an Evolution Link Pipe (SS) and tested on The Akrapovic dyno against a GR Yaris with a standard stock exhaust. Designed for racetracks and closed courses only and requiring mandatory remapping of the ECU, the link pipe weighs in at 17,4 % lighter than stock and removes the standard OPF/GPF.THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.