DriftShop Decat / Down Pipe for Mazda RX-8This DriftShop decat pipe is 3 in diameter and a direct fit for your Mazda RX-8i. It's also known as a downpipe.Manufactured from T304 stainless steel using TIG welding all DriftShop exhaust components are made to be durable with a precise fit.They are an ideal solution to release both power and noise from your engine. We recommend combining it with a DriftShop catback exhaust system for the best in performance gains.All fittings and gaskets are included this is a direct replacement for the OEM item.