---tab Description--- Black Dodge Ram 6.7 Diesel 4" Exhaust Overview Compatible with 2019-2025 Dodge Ram 6.7L diesel models, our 4-inch black downpipe-back DPF delete exhaust eliminates the restrictive design of the stock exhaust system. It noticeably boosts horsepower and torque, improves throttle sensitivity, and produces a deep, aggressive exhaust note. Made of premium 409 stainless steel with black powder coating and titanium heat wrap, it provides exceptional heat insulation and corrosion resistance. Ideal for tuned setups, heavy towing and off-road driving, it upgrades overall truck performance, fuel efficiency and undercarriage appearance. Black 4" Downpipe-Back Exhaust Key Features This SPELAB 4.0-inch downpipe-back exhaust replaces the restrictive factory exhaust to maximize 6.7L diesel engine efficiency. It improves fuel economy and lowers daily fuel expenses, while delivering consistent, dependable performance during heavy towing duties and rigorous off-road driving conditions. Black Powder Coating for Heat and Corrosion Protection High-Temperature Protection: Adopting professional-level coating technology, it resists extreme exhaust heat, effectively avoiding surface discoloration and thermal damage to sustain stable long-term performance. Enhanced Corrosion Resistance: Forms a solid protective layer to defend against road salt, moisture, mud and various off-road contaminants, maintaining excellent durability in all harsh working conditions. Improved Aesthetics: Sleek matte black finish transforms your truck’s undercarriage, giving it a stealthy, performance-focused look that matches your Duramax’s power.. Black Titanium Heat Wrap for Head Pipe Heat Control Reduced Underbody Heat Radiation: Blocks excessive high-temperature heat to protect delicate hoses, circuit wiring, fuel lines and core engine components, prolonging part service life and avoiding heat-caused mechanical faults. Extreme Temperature Endurance: Features a high temperature resistance rating of over 1000°C (1832°F), perfectly suited for modified 6.7L diesel engines, heavy towing tasks and high-intensity off-road driving scenarios. Optimized Exhaust Flow: Dispels heat soak phenomenon, accelerates exhaust gas discharge, and optimizes engine efficiency, bringing stable power improvement and smoother overall vehicle operation. ⚠ Off-Road Use Only – DPF removal is illegal for on-road vehicles in most regions. For competition/racing use only. Downpipe-Back Exhaust Specification 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...