The new Large Bore-HD exhaust is engineered to perform in the most extreme environments. This system is constructed from mandrel bent 4” stainless steel tubing for maximum flow, increased horsepower, increased torque and lower EGT's. This system is available in 4” cat-back with muffler. Large Bore-HD exhaust systems are the perfect combination of performance, fit and value. For over 40 years, MagnaFlow has maintained its position at the forefront of high-end catalytic converter and performance exhaust manufacturing. MagnaFlow stands by its products with industry-leading warranties in service of its mission to provide the highest quality exhaust experience from start to finish.

Automotive Performance Systems Inc. (APS) and its NEUSPEED®‚ and Neumann Distributing divisions are your number one source for aftermarket import performance products! We carry a large inventory of all the parts featured in our catalog and on our website. Our customer service is unrivaled, with the most knowledgeable support team in the industry. All aFe exhaust systems are engineered and manufactured in our Corona, California facility. The price of a cat back exhaust system can vary widely depending on the make and model of your vehicle, the materials used, and the complexity of the design.

We match the exit size to the size exhaust you ordered, so if you are ordering this after the fact, please include the exhaust size you have in your order. Replaces the OEM catalytic converter with a free flowing pipe. Completely straight through (no bottleneck), free flowing mini-muffler and pipe. Replaces the OEM catalytic converter with a 3” metal substrate core high-flow performance cat and our mini muffler. The metal core is our highest flowing cat available and it will&nbsp