The COBB Titanium Cat-Back Exhaust is un-matched in build quality, style, and performance. Utilizing Grade 4 titanium tubing, this cat-back offers high corrosion resistance and protection from impacts. Back purging ensures quality welds that will not fail due to contamination. The entire system uses slip-fit connections, allowing for a wide range of adjustment. A blued titanium tip adds a distinct touch and offers adjustability. Best of all, this complete system weighs in at 17.25lbs assembled, considerably lighter than the factory system as well as its stainless steel counterpart. The COBB Titanium Cat-Back Exhaust for your 2002-2007 Subaru WRX or STI offers premium styling and quality. Other titanium cat-backs can produce a certain 'tinny' exhaust note, however, the build quality of this system provides a refined note more akin to traditional COBB Cat-Back Exhaust Systems.