2003-2006 Nissan 350z Z33 Straight Cat Delete Testpipe

Circuit Werks latest 2003-2006 350z Straight Test Pipes, this will help with the sound of your VQ motor, smooth out the exhaust flow, and not to mention the additional performance gain versus any typical test pipes.  Fits both Auto and Manual transmission (Included O2 extensions, but the extensions will only work with the Manual transmission which may not work with Automatic transmission models).  These test pipes feature a 2.5" outer diameter with a 2.25" inner diameter design, Built in flex pipes to absorb all the movements from your motor and is a Direct bolt on with built in o2 sensor extenders.  Sorry, no instructions and please note that this replaces your factory catalytic converter and might not pass emissions in some States.  Off road use only.  Other models are also available.