High-Flow Catalytic Converters

The JHM B6-A4 3.0L downpipes are meticulously crafted from stainless steel to enhance the exhaust flow and performance of your Audi's 3.0L V6 engine. These downpipes feature a 2.5-inch piping diameter, which extensive testing has shown to provide the best gains in acceleration and high-end power without compromising low-end torque compared to 2.25-inch and 2.75-inch options. The design specifically addresses the restrictive nature of the OEM catalytic converter complex located close to the engine, significantly improving airflow. Constructed with high-flow catalytic converters, these downpipes are designed to bolt directly to stock B6-A4 3.0L V6 or B6-S4 cat-back exhaust systems. For those seeking a full 2.5-inch exhaust, the 2.125-inch reducer at the end of the pipes can be modified to adapt as needed. The product includes one pair of JHM 2.5-inch downpipes with high-flow catalytic converters and the OEM 2.125-inch connection. Fitment is specified for all quattro B6-A4 models from 2002 to 2005 with the 3.0L V6 engine, available in both manual and automatic transmissions. Additionally, they are compatible with C5-A6 models from 1998 to 2004 with the 3.0L V6 engine (FWD and Quattro). It is critical to note that these downpipes are strictly for off-road use only and are not legal for use on public roads, as they replace or modify OEM catalytic converters. California residents should be aware of the Prop 65 warning regarding potential reproductive harm or cancer risks associated with this product.