Performance Motorsport Parts Sports decats are designed to replace the stock catalytic converter removing all restriction, Our Performance decats allow better exhaust flow resulting in increased power and torque while also improving throttle responsiveness. ---Manufactured from high quality T304 grade polished stainless steel ---Mandrel bent and fully TIG welded for strength and durability ---Free flowing catalyst replacement to get the most from the M47 engine ---Built in flexi joint to help reduce strain on your exhaust ---Sold for off road and track use only Fitment: BMW 1 Series E87 118D & 120D 2004-2007 models BMW 3 Series E90/E91 318D & 320D 2005-2007 models BMW 5 Series E60/E61 520D 2005-2007 models BMW X3 E83 2.0d 2005-2007 models Please note: ---This item is designed to remove the cat from the standard vehicle.