Supersprint Centre H Pipe - BMW 3 Series F80 M3 | 4 Series F82/F83 M4Centre H Pipe Supersprint for BMW M3 F80 and M4 F82 F83 Resonator delete kit 2x65mm The coupling of the Supersprint centre section with the OEM rear mufflers may require specific adaptors, even in the case when it's not specified that the part requires to be fitted as a kit with others. The cause may be a different diameter, anyway the coupling may require a connecting sleeve. Such adaptors must be requested at the moment of the order, ask our experts