Borla along side GM's Camaro Team have developed these long tube headers with the performance enthusiast in mind. The system uses 1 3/4" primary tubes that merge together using Borla's race merge collector. They are constructed of 100% stainless steel and are made to be durable and allow for maximum performance gains. Along with any Borla exhaust or header, this system comes with their million mile warranty and is gauranteed to out last the life of your vehicle.