Jocestyle Exhaust Fake Turbo Whistle Pipe Sound Muffler Blow Off Valve Gold Size S Made of light weight aluminum CNC Machined from 6061 T-6 Aluminum 1" muffler tip for best effect (OEM Muffler) Install on Aftermarket muffler, Catback, Axleback muffler it will not produce any sound. Easy installation. Universal fits for most cars w/for OEM Muffler Exhaust Size: S; Tail Pipe diameter: 32mm-43mm; Length: 11cm