Invidia | Downpipe with High-Flow Cat (MK7 Golf R, Audi S3 8V)Invidia Downpipe with High Flow Cat Invidia exhaust systems offer a rich exhaust note which enhances the natural tone of your car's engine. Invidia's high flow design ensures efficient exhaust flow for optimum engine performance. Features 1. 5mm thick S304 Stainless Steel mandrel bent piping greatly reduces the risk of cracks and breaks developing, reduces rasp and vibration. Nickel Cloated for added durability Cast flanges precision fitment and