Unassembled Multi Fit Kit Blk 8 1 2 MM High Density Silicone Rated at 450 Degs F 2016 chevrolet silverado 2500 hd high country esi8945024 The system features BORLA®'S Polyphonic Vibrant Red Powder Coat The system features BORLA®'S Polyphonic Harmonizer Technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean It should be used on vehicles that are NOT equipped with NPP Unassembled Multi Fit Kit Blk 8 1 2 MM High Density Silicone Rated at 450 Degs F Spiral Wound Kevlar Core 90 Deg Spark Plg Boots User Installed 90 Deg Distributor Boots and both HEI Style Terminals and Socket Terminals