Borla Performance has been involved in racing Corvettes for over 30 years, from the legendary ALMS Corvettes that first won LeMans to Lou Gigliotti and John Lingenfelter. Almost everyone admits the C6/Z06 is a true Supercar. Some customers asked BORLA to tame down the 3” exhaust, but BORLA didn’t want to loose any of the performance gains they had worked so hard for in the very popular S-type package. How to keep the power while making the sound less aggressive? The answer came from one of our race teams who advised they were running BORLA XR-1® Multi-Core Mufflers on their 800 HP racer in order to concentrate better and hear all the radio. The BORLA RD lab tried it and found an awesome sophisticated smooth sound with equal power and even a gain in torque (PN 140265). It proved, even to us, why Alex Borla was awarded the only U.S. Patent for this clever design. BORLA is the only company that can manufacture Multi-Core Mufflers -- The Winningest Mufflers in Racing. It only stands to reason that one of the true icons of the Muscle Car era should have the best engineered racing muffler of all time transport the growl of 500 plus ponies. Some say the 60’s were the hay-day of performance street cars. They are wrong. Today is that day. The best engineered, designed, performing, race-bred street cars of all time are built today. It just seems right that for a car this good, you step up to BORLA. From Baja to Bonneville, from Indy to LeMans, from Top Fuel to TransAm and almost every type of racing in between, Champions Choose BORLA.