---tab Description--- 2007.5-2010 LML 4" Downpipe-Back Exhaust Overview Unleash the true potential of your 2007.5-2010 LMM 6.6L Duramax with our Black Downpipe-Back DPF Delete Pipe. Engineered for the serious enthusiast, this system is designed to optimize exhaust flow, reduce restrictive back pressure, and deliver a noticeable boost in performance and sound. Crafted from durable 409 stainless steel and featuring a stealthy black powder coat combined with a high-performance titanium heat wrap, it's built to withstand the toughest conditions while giving your truck an aggressive, custom look. Perfect for off-road and competition use where DPF systems are not required. Black Downpipe-Back Exhaust Key Features Enjoy outstanding fuel economy enhancement after installation of 4.0" downpipe-back exhaust sysytem. It effectively improves overall engine operating efficiency, optimizes fuel consumption and helps you cut down daily fuel costs easily. Black Powder Coating for Heat and Corrosion Protection High-Temperature Protection: Advanced coating technology provides superior resistance against extreme exhaust temperatures. Enhanced Corrosion Resistance: Protects against rust and environmental elements, ensuring longevity and durability. Improved Aesthetics: Delivers a sleek, aggressive black finish that enhances your truck's underbody appearance. Black Titanium Heat Wrap for Head Pipe Heat Control Reduced Underbody Heat Radiation: Significantly lowers heat transfer to critical underbody components, protecting nearby hoses, wiring, and fuel lines from heat damage. Extreme Temperature Endurance: Withstands temperatures exceeding 1000°C (1832°F), ensuring reliability in demanding conditions. Optimized Exhaust Flow: Prevents heat soak and maintains exhaust gas velocity, contributing to improved engine efficiency and power delivery. ⚠ Off-Road Use Only – DPF removal is illegal for on-road vehicles in most regions. For competition/racing use only. Product Specifications Material: Premium 409 Stainless Steel Finish: High-Temperature Black Powder Coating Heat Management: Black Titanium Heat Wrap on Head Pipe System Type: Downpipe-Back DPF Delete Application: Designed for Downpipe-back systems, ideal for high-temperature environments, towing, heavy loads, performance-tuned vehicles, and off-road use. Durability: Built to enhance exhaust system robustness and impact resistance. Installation Guide Install takes about 1hr with basic hand tools done on the ground of your driveway or garage. Quicker if you have automotive style lift. Cutting may be be required to fit shorter wheelbase bed/cab configurations. Clamps, hangers and hardware are included. You may have to re-use some factory hardware. Tuner Required for DPF Delete Exhaust Installation Removal of the DPF, CAT, SCR, and/or DOC involves removing and eliminating emission related sensors. A DPF delete capable tuner is required to prevent any check engine light or diagnostic trouble codes from setting. ---tab...