2.5" Stainless Steel Downpipes with Catalytic Converters

The JHM FIN-FI-B6S-DP are performance downpipes constructed from 2.5" stainless steel, featuring 300-cell high-flow catalytic converters for improved exhaust flow. These downpipes are engineered for the Audi S4 B6 (2003-2005) and B7 (2005.5-2009) chassis, specifically for the 4.2L V8 40v engine. Options are available for both automatic and manual transmissions. The connection to your cat-back exhaust system can be configured as a dual 2.5" or necked down. For optimal performance, it is recommended to use a full 2.5" cat-back system; if your current system is necked down, modifications may be necessary to avoid restricting these downpipes. The manufacturer, Fast Intentions, has a proven track record, achieving a 12.97 @ 109.1mph quarter-mile time with a car tuned using their cat-back and downpipes. Important Considerations: These downpipes are for racing competition and off-road use only and are technically not legal for use in highway or street vehicles in California and other states due to emissions regulations, as they do not have a CARB E.O. number. Purchasers acknowledge and certify that their vehicle will only be used for racing applications or off-road use only and agree to indemnify JH Motorsports Inc. for any liability arising from use on public streets or highways. Additionally, this product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Shipping is via ground only.