This product is designed for mandatory use with the Akrapovič Slip-On Race Line (Titanium) if the stock headers are retained. Constructed from high-grade stainless steel, this set utilizes special insulation to prevent any excess heat from affecting other parts. The Slip-On Race Line Adapter’s design ensures perfect performance and sound from the Slip-On Race Line (Titanium) exhaust system because the gas flow has been topologically CFD optimized and meticulously tested on the vehicle.For vehicles without particulate filters, plug inserts and plug nuts from the Akrapovič installation kit must be used to disable the backpressure sensors.THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR STREET OR HIGHWAY USE.