Borla 04-07 STi XR-1 Cat-Back Exhaust

More Aggressive "S-Type" Cat-Back. The mellow "Touring" Cat-Back exhaust is part# 140053, Borla Performance once again leads the industry with a high flow performance exhaust for the hot Subaru WRX and WRX STI. This Cat-Back system, Borla #140075, is custom designed by Borla engineers for the 2.5L turbocharged 4-cylinder engine with automatic and manual transmissions. Winning on racetracks around the world has given Borla a leg up on the competition with trickle down technology from the world ?s fastest cars. The unique design is a direct bolt-on fit that meets all emission requirements. The system has shown significant flow and performance improvements by virtue of Borla XR-1? patented technology utilizing 3" tubing that exits with a super looking Borla logo embossed 4"angle cut, rolled edge, single round polished tip. More flow means more power, and if you tune this turbocharged super import, that flow will simply allow even more power. When you get a close look inside this muffler,