The system was developed on BMW M2 CS (F87N) equipped with OPF/GPF, however it fits both versions (OPF and non OPF). ECE type approval is only valid for cars equipped with OPF/GPF.The latest addition to the BMW M series is the awe-inspiring M2 CS, an exquisite high-performance car that can be made even better by adding an Akrapovič Slip-On exhaust system. Made from titanium – with some parts cast in Akrapovič’s own foundry – this system will reduce exhaust system's weight by over 45% and deliver extra power and lower backpressure. The sound has also been enhanced by Akrapovič’s engineers, delivering a true sporty tone especially in the middle and upper rpm range but without any droning. Carbon-fibre tailpipes give an added look to the rear of the M2 CS to display its sporting potential. The system is a simple plug-and-play operation to fit, and it has been designed to meet ECE type approval.The optional Akrapovič Sound Kit (P-HF1385) is also available. If upgrading the slip-on system with evolution link pipe, the optional Akrapovič Sound Kit P-HF1177 is not needed - specially developed Akrapovič Sound Kit is already included within the evolution link pipe set. With the use of optional Akrapovič Sound Kit, the ECE homologation is not valid anymore.For installing the slip-on system, the stock exhaust system has to be cut. Please read the instructions carefully before the start of the installation.