The lightest and best made Decat in the world. This is been specially made in Inconel,which is as light as titanium,but is far more stable at the high heat, a decat pipe can reach. Its weighs virtually nothing,and has been welded to standards, not seen on any other exhausts. Totally smooth inside,so no gas resistance. Like new condition,and has only covered a few hundred miles. I doubt if there are 5 of these in the world made from Inconel. These cost £650 from CGR. Looking for £400. This will fit all other systems, that will connect to a standard cat. https://www.cgrautomotive.co.uk/single-post/2017/01/06/Megane-3-inch-Decat-Downpipes