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Capristo Audi S8 D4 and S6/7 4G decatalyst downpipe
These lightweight test tubes fit in place of heavy OEM catalytic converters. The use of test pipes removes the flow restriction that a catalytic converter places on an exhaust system, while increasing power.
The silencing effect of the converters is also eliminated, enhancing the sound aggressive engine. Test tubes are ideal for track days and racing applications.
*fits 2012 – 2018 models (including S8 Plus)*
Internal diameter: Ø62, External diameter: Ø65
Replaces OEM code 4G0254202NX and 4G0254252LX
On applicable models , the center section is made flexible as an additional protection feature against vibration damage to the manifold pipes and the Lambda or oxygen sensor caps are pre-installed and threaded.
Made of T309 stainless steel (1.4828).
IMPORTANT:
Tubes can trigger a CEL (Check Engine Light).
*Recommended for off-road and track use only*