HJS Tuning ECE Downpipes (Audi/Seat/VW) Audi > S4 > 4.2 V8 quattro B6 Saloon/Sedan The hose is constructed to

The hose is constructed to provide a constant radius reducing restriction in the initial stage of the intake tract and is a direct replacement for the factory pipework

Every unit is rigorously pressure tested for ultimate reliability

5mm pipework and fits from the catalytic converter section backwards (Cat Back) these exhausts replace the centre and rear sections

Combined with our Race Sports Cat

Cheaper option than replacing the full sump

HJS Tuning ECE Downpipes (Audi/Seat/VW) Audi > S4 > 4.2 V8 quattro B6 Saloon/Sedan The hose is constructed toHigh performance, road legal downpipe with sports catalyst made by HJS in Germany. Designed to optimize vehicle power and sound while maintaining full European emission standards with ECE approval. Plug and Play fitment. Sound levels within 2dB of OE.