4" Turbo-Back Exhaust System

The Spelab 4-inch Turbo-Back exhaust system is engineered for off-road and race applications on 2007.5-2009 Dodge Ram 6.7L Cummins Diesel trucks. Constructed from durable 409 stainless steel, this system is built to withstand harsh environments and high exhaust temperatures, making it suitable for heavy-duty use like towing and hauling. This turbo-back system replaces the entire factory exhaust from the turbo to the tail, providing a seamless, bolt-on installation that does not require welding or custom fabrication. It deletes the restrictive factory DPF and catalytic converter, which significantly improves exhaust flow, reduces backpressure, and enhances turbo response for better torque and throttle control. The muffler-free design contributes to a deeper, more aggressive diesel sound. However, a tuner with DPF delete capability is required. This is because the deletion of emissions sensors (DPF, CAT, SCR, DOC) will cause check-engine lights or fault codes without proper calibration. The muffler and tail tip are sold separately and must be purchased to complete the exhaust system.