D660-0079-BLK Dinan Free Flow Axle-Back Exhaust - 2018-2023 BMW M5
Stainless Steel - Black Tips - F90;More Power: + 6 HP @ 6600 RPM, + 5 LB-FT @ 6600 RPM; Enjoyably louder, sportier sound; Four massive 4" diameter clamp-on, double-walled, black ceramic coated and laser engraved exhaust tips; 100% 304 stainless steel construction; Larger diameter piping for increased flow (83mm vs 80mm); Stock exhaust valve actuators reused and operation of exhaust valve is unchanged so exhaust tone can be adjusted via the M-drive settings; Computer controlled exhaust valves are retained and limit noise during low speed driving and open fully during high-load conditions ; Twin secondary exhaust valves are a whopping 76mm diameter, making them 30% less restrictive than the OE valves; Easy bolt-on installation with included mounting hardware;
