AC Schnitzer Silencer for 540i / 540i xDrive for cars with M-sport packagefor 540i 540i xDrive for cars with M sport package SA 337 or M technic SA 715 not for cars with otto particle filter SA1DE Important consumer notice: This article is not intended for use in the public road traffic permitted. In Germany applies: Use only for racing purposes! Product Information: Philosophy Engineering Original AC Schnitzer high performance silencers are made from stainless steel with different tailpipes. They all offer especially in