Borla S-Type 2.5" Cat Back ExhaustBORLA Type S Type S II Cat Back & 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 a distinctive more aggressive sounding S Type sound respected by motoring enthusiasts everywhere. From the design characteristics of the inner cores to the amount of sound absorbing composite filament, all specifications of