Downpipe Diameter 4 inch Cat Type Catless (no catalytic converter) Material T304 Stainless Steel Fitment Fits stock or modified vehicles – no modifications required Compatible with Audi S7 C7 (2011–2018) Audi S7 C7 Catless Downpipe Unleash your S7's true potential with this high-flow catless downpipe engineered for maximum performance. Designed specifically for the C7 platform, it eliminates restrictive catalytic converter limitations to deliver improved throttle response, enhanced turbo spool-up, and a more aggressive exhaust note. Precision-mandrel bent construction ensures optimal exhaust scavenging and reduced backpressure. Perfect for tuned builds and track-focused drivers seeking noticeable power gains. Direct bolt-on fitment with no modifications required.