Borla Cat-Back And Axle-Back 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 motoring enthusiasts everywhere. Q60S/RED SPORT 17-18 3.0TT V6 AT AWD 2DR 2.5in. S-TYPE S RD RL AC PH SR TIP: 4.50in. X 7.75in. 2017-2018 Infinity Q60S and Red Sport 3.0 V6 Twin Turbo Automatic Transmission All Wheel Drive (AWD).