STM Evo 7/8/9 3.5" Titanium Cat-Back Exhaust mopar 8" in the front and

8" in the front and rear

The standard size is 18"x24" which will fit most window openings

The piping expands to a full 4" before meeting the 4" muffler inlet and exits via a 4" tip at a 15 degree angle

It is a 2-piece design constructed of CNC billet 6061 aluminum

STM Evo 7/8/9 3.5" Titanium Cat-Back Exhaust mopar 8" in the front andThe STM 3. 5" titanium catback exhaust fits Evo 7 8 9 weighs in at only 12. 3 pounds and is 100% full titanium. This design fits the JDM rear bumper only and is available with a bare titanium or burned blue tip. Vehicle Fitment: 2001 2006 Evolution VII VIII IX Fits with JDM Evo 9 rear bumper only Does not fit Evo 7 8 rear bumpers properly More Info: Weighs 23. 5 pounds less than the factory cat back and will bolt up to an aftermarket 3. 5" cat or