This Is A Complete Grand Rock Diesel Pickup Dual Stack Kit. Includes 2 36" Chrome Stacks w/ Aussie Cuts. Each Stack reduces from 7" to 5". This Kit Has A 5" Diameter which reduces to 4" below the Y Pipe. Includes Everything You Need To Give Your Diesel Pickup a "Big Rig" Look. Improves Truck Performance With A Better Exhaust Flow. Routes Exhaust Fumes Above And Away From Road Level. Includes 2 Bright Stainless Unistrap Clamps To Secure Stacks. Quality AccuSeal Heavy Gauge Band Clamps Included In Kits.