The 2.5" Dual Performance Cat Back Exhaust with Quad Tips is a high-quality aftermarket exhaust system designed specifically for the 2008-2013 BMW M3 E90 E92 models. It features a dual exhaust setup with two 2.5" pipes that provide improved exhaust flow and performance. Exhaust ,Turbo manifold,Exhaust header,Tail Pipe,Exhaust catback,Exhaust muffler. The quad tips give the rear of your BMW M3 a more aggressive and sporty look, and they are made from high-quality stainless steel for durability and corrosion resistance. The exhaust system also includes a high-flow catalytic converter, which helps to improve horsepower and torque.Installation of this cat back exhaust is relatively straightforward, as it is designed to fit directly onto the stock exhaust mounting points. However, some cutting and welding may be required for proper fitment, so it is recommended to have it installed by a professional. Overall, the 2.5" Dual Performance Cat Back Exhaust with Quad Tips is a great upgrade…