aFe Large Bore-HD 4 IN 409 Stainless Steel Race Pipe Dodge RAM Diesel Trucks 07.5-12 L6-6.7L (td) - 49-42023

The Large Bore-HD exhaust race pipe is engineered to perform in the most extreme environments. This system is constructed from 4" mandrel bent stainless steel tubing for maximum flow, increased horsepower, increased torque and lower EGT's. Large Bore-HD exhaust race pipes are the perfect combination of performance, fit and value.