ISR Performance high flow cats are custom made utilizing Magnaflow 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 location and also adds a more aggressive Exhaust tone.

These HFC's are for 350Z DE engines ONLY.

** All ISR Performance Products are Designed for Off Road Use Only **

What’s in the Box:

• 2x Stainless Steel high flow cats
• 2x 2 bolt exhaust gaskets 
• 2x 3 bolt exhaust gaskets 

Application: 

Nissan: Z33 350z (2003-2006)

**VQ35DE Motors ONLY**