The PPE 116111800 Manifold Upgrade & Up Pipes are the perfect way to increase power and performance in your LMM Duramax 2007.5-2010 Truck. These bellows are internally-sleeved aircraft-grade 304 stainless steel with an increased inner diameter for higher flow and lower exhaust gas temperatures. This will accelerate turbo spool-up, increasing power, fuel economy and maintaining reliability. The kit comes with two PPE Manifolds, two PPE Up-Pipes, a PPE Down Pipe Support Bracket, and PPE 304 Stainless Steel Manifold and Up-Pipe Gaskets. It also has built in bosses, pre-drilled and tapped 1/8 NPT ready for EGT Probe.