BORLA 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 BORLA® exhaust systems are tuned on a vehicle-by-vehicle basis for an optimum blend of performance and sound. Each system is built from premium 300-series austenitic stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best