Hi, This is is designed for an Aggressive sound under acceleration and a drone-free experience during cruise. This kit is coupled with their patented reflective sound cancellation science to tune out annoying low frequencies that cause droning and leave you with a crisp, clean sound. This cutting-edge innovation also reduces backpressure, allowing your engine to produce more horsepower and torque. The robust, aggressive-sounding Corsa Sport exhaust systems are manufactured from premium stainless steel, with mandrel bends and handcrafted tips polished to a gleaming brightness to enhance your ride's appearance. This gives a 37% flow rate increase as well. Please click the link below for your reference. https://www.corsaperformance.com/products/2-25-sport-cat-back-14553?_pos=1&_sid=b188b22ba&_ss=r