Milltek Sport non-resonated 102mm secondary catalyst bypass mid-pipe for the BMW G87 M2 (S58). Hand-finished T304L stainless steel with 4 inch primary and 102mm secondary piping for maximum exhaust scavenging. The non-resonated design is optimised for closed-course and track use where an aggressive mid-range tone is desired. Flows to the OE axle-back (cutting required) or pairs with the Milltek axle-back. Key Features: T304L stainless steel, mandrel-bent construction. 4 inch primary / 102mm secondary pipe diameter. Replaces the factory secondary catalytic converter section. Non-resonated, track-focused tone. Fits: BMW M2 2023+ (G87, S58 engine)
