This is the genuine BMW M Performance titanium valved silencer assembly for F80 M3, F82 M4 Coupe and F83 M4 Convertible models with the S55 engine. No replicas, no reinterpretations - factory-engineered, CAD-validated and built to OEM tolerances.
Lightweight titanium construction - ~8 kg lighter than stock
Factory valve control linked to drive modes: Sport/Sport Plus opens valves for aggressive bi-turbo tone; Efficient keeps them closed for deep, refined daily driving
Includes full silencer assembly, four tailpipes (titanium or carbon fibre), clamps and mounting hardware
Requires two S55 downpipe gaskets and four M8 catalytic centre collar nuts - sold separately
