A free flowing exhaust is a great way to get the best out of the Defender?s 300TDI engine Replaces the entire exhaust system from the turbo Manufactured from Mandrel bent T304 grade stainless steel and CNC machined Flanges with full TIG welding for strength and durability 2.5? bore throughout for maximum gas flow Designed to be a direct replacement for the OEM system with the OEM turbo Please note, these are aftermarket products and are not genuine Jaguar Land Rover parts