This is 3" GMS adapter to connect GMS 3" Midpipe to OEM rear standard or race exhaust silencer, Akrapovic silencer or other aftermarket rear silencer. With this combo you get the best of both worlds. The GMS 3" Modular exhaust components will provide unmatched flow, weight reduction and eliminate the heat soak issues, and option to connect the rear silencer of yoru choice liek Akrapovic or even connect to standard OEM rear exhaust to make your exhaust look OEM.
 
This is part of a fully modular GMS 3'' exhaust system and can be combined with all the other GMS exhaust parts you need.