Designed in-house by Direnza engineers, our GPF removal pipe is a direct replacement for the stock MK8 Golf R's GPF. Engineered to not only improve power and torque but also throttle response on the 2.0 turbo engine. ---4" - 3.5" Diameter for maximum gas flow giving optimum performance increases ---Replaces restrictive catalytic converter + GPF which restricts gaining more power from the 4 cylinder turbo engine ---Tig welded from T304 stainless steel for maximum strength and rust prevention ---Designed to be a direct replacement for the OEM catalytic converter + GPF for ease of installation ---Fittings included as pictured Fitment Volkswagen Golf MK8 R 2.0 TSI 2019+ Models Please note - May require bypass software on vehicle ECU.