Audi S4 4.2 V8 B6 large-bore Downpipes and sports catalysts

Milltek is out in front again with the impressive downpipes and CATs for the new Audi S4 4.2 V8. Bolting directly to your exhaust manifolds, these performance CATs replaces the OEM primary CAT with a 200-cell platinum-coated metal high-flow CAT and eliminates the OEM secondary CAT.

Power gains come when you can free up flow as close to the engine as possible and the Milltek Sport Hi-Flow CATs deliver!

View photos, sounds and technical information and full product details on the Audi S4 V8.