Looking to take your LML Duramax truck to the next level? PPE's high flow exhaust manifolds and up pipes are just what you need. These bellows are made from aircraft-grade 304 stainless steel and feature an increased inner diameter for better flow and lower exhaust gas temperatures. This results in accelerated turbo spool-up, more power, and improved fuel economy - all while maintaining reliability. The kit includes two PPE manifolds, two PPE up-pipes, a PPE down pipe support bracket, PPE 304 stainless steel manifold gaskets and up-pipe gaskets, built-in bosses for an EGT gauge sensor, and all the necessary hardware. So don't wait - get your Up Pipes today.