ISR Performance High Flow Cat Nissan 350z Z33 2003-2006 VQ35DE vendor_BLOX Racing Normal pre-paint prep required if

Normal pre-paint prep required if painting (sanding and primer)

Get that plastic blob of an overflow tank out of your engine bay

CFD Optimized design

5” inch Aluminum mandrel bent piping

ISR Performance High Flow Cat Nissan 350z Z33 2003-2006 VQ35DE vendor_BLOX Racing Normal pre-paint prep required ifPart #: IS HFC Z33 ISR Performance high flow cats are custom made utilizing 300 cell spun Metallic substrate to be less restrictive than stock, Letting you gain power while still converting harmful exhaust gasses, ISR HFC are Fully TIG welded with true mandrel bends throughout. ISR Performance HFC bolt up to factory or aftermarket exhaust (as long as the aftermarket exhaust is built from OEM specs). ISR HFC also retains the factory Oxygen sensor