Cat-back system (from the main catalyst): 048017 1200 (Without EC homologation) + 047017 0000 + 047017 0500LR + set of exhaust pipes! No need to modify the vehicle. Jack return system (from underbody secondary catalytic converter): 047017 0000 + 047017 0500LR + exhaust pipe kit. No need to modify the vehicle. Non-resonant cat-back secondary section, incl. CE approval in combination with 047017 0500LR