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This Untd. Performance Braided flex downpipe features 3″ tapered to 2.5″ piping to achieve horsepower gains across the entire RPM range on 2.7L Audi S4/RS4 (B5) and A6/Allroad (C5). Catalytic converter is removed to eliminate restrictions on exhaust flow.
The unique hybrid design of the inlet flanges enables direct bolt-on for stock K03 turbo, upgrade K04 turbo and custom built RS6 turbo. -
dMaximize cooling efficiency and unleash consistent performance from your 2.7T Bi-Turbo setup with the Untd. Performance Dual Side Mount Intercooler (SMIC) system. Engineered as a direct-fit upgrade for the factory side mount intercoolers on the Audi B5 S4, RS4, and C5 A6, this performance intercooler setup drastically improves charge air cooling, reduces heat soak, and supports higher boost levels—making it the perfect solution for both aggressive street builds and full track applications.