Stainless steel decatalyst downpipe Capristo Audi S8 (D4) and S6 / S7 (4G)

*fits 2012 – 2018 models (including S8 Plus)*

These lightweight test pipes fit in place of the heavy OEM catalytic converters. Using test pipes removes the flow restriction that a catalytic converter places on an exhaust system, while increasing horsepower.

The effect is also eliminated silencing the converters, enhancing the aggressive sound of the engine. The test tubes are ideal for track days and racing applications.

On applicable models, the center section is made flexible as an additional protective feature against damage from vibrations to the manifold pipes and the Lambda or oxygen sensor caps are pre-installed and threaded.

Made of T309 (1.4828) stainless steel.

IMPORTANT:

The tubes may activate a CEL (Check Engine Light).

*Recommended for off-road and track use only*