This 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 II has a dual tip design and is set up WITH a silencer and is rated at approximately 100 decibels depending on engine set up. This is a popular set up for track day users who attend events at tracks with a sound restriction and for street car folks who want a louder higher performing engine. Stingers are sold as a set only. Stingers come with all gaskets, nuts, bolts and washers needed.