Description: It allows for maximum performance from Borla’s patented, race-bred technology and engineering. Non-GM Warranty. Limited Warranty by Borla 1,000,000 miles. For more information contact your dealer.. Upgrade the look and sound of your vehicles exhaust system with this Chevrolet Accessories dual side exit Exhaust Upgrade System. . It allows for maximum performance from Borlas patented, race-bred technology and engineering. To be used with Borla Exhaust Tips, sold separately.