Borla Catback Mitsubishi Lancer Ralliart 09+Part# Product Type Pipe Diameter Tip Size Tip Description Tip # Exit 140334 Cat Back Exhaust Single 2. 75" into Dual 2. 25" 5" Single Round Rolled Angle Cut 03 Single Split Rear Exit Borla Cat back TM & Rear Section exhaust systems feature patented straight through and multi core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA Sound of Power respected by