ISR Performance High Flow Catalysts are custom-built using a 300 cell spun metal substrate to be less restrictive than stock, allowing you to gain horsepower while converting harmful exhaust gases, ISR HFCs are fully TIG welded with true mandrel bends. ISR Performance HFCs bolt onto a factory or aftermarket exhaust (as long as the aftermarket exhaust is built to OEM specifications). The ISR HFC also retains the factory oxygen sensor location and adds a more aggressive exhaust note.

CONTENTS OF THE BOX:
-2x High Flow Stainless Steel Catalysts
-3x 2-bolt exhaust gaskets
-1x 3-bolt exhaust gaskets
-9x Bolts
-9x Nuts

**ALL ISR PERFORMANCE PRODUCTS ARE DESIGNED FOR OFF-ROAD USE ONLY**