This Porsche 911 stinger exhaust system is a great improvement over traditional exhaust systems and is designed to be used with European Racing Headers. It saves weight while promoting your engine to deliver the maximum horsepower potential. This stinger has a cross over built into the end which increases the engines push/pull as one cylinder bank helps the other bank breath. This system also incorporates free flowing silencers which make the system a bit more quiet than our original open dual tip stinger system. Stingers are sold as a set only. Stingers come with all gaskets, nuts, bolts and washers needed. We offer Ceramic Coating Services (See website)!