Unleash performance in your Audi S6, RS6, S7, RS7, A8, or S8 with the Redstar Exhaust Performance Downpipes engineered for the 4.0T TFSI platform across C7, C7.5, D4, and D4.5. These downpipes feature an OEM X-crossing design with 3 in tubing transitioning smoothly to OEM-spec bottom flanges, and are designed to fit OEM mid-pipes for a precise interface. No O2 wire extensions are required.

Flow-optimised geometry reduces backpressure to sharpen turbo spool, improve throttle response, and unlock meaningful power gains while adding a richer, more assertive exhaust note. Optional OEM-style heat shielding utilises motorsport-inspired construction to cut radiant exhaust heat by up to 80%, helping stabilise under-bonnet temperatures and support turbo longevity.

Constructed from 2 mm wall T304L stainless steel and built for durability, Redstar downpipes deliver a high-quality solution that installs cleanly and integrates with factory systems. LHD and RHD compliant, they provide a focused upgrade path for Audi S6, RS6, S7, RS7, A8, and S8 owners seeking a premium performance exhaust downpipe solution with Redstar engineering credibility.

Available Options

• HJS HD 200cpsi Catalytic Converters: Engineered in Germany and trusted worldwide, the HJS 200cpsi ultra high-performance cats are rated for over 1000hp. Renowned for exceptional flow, durability, and consistent quality, these converters set the benchmark for high-output applications. Ideal for drivers demanding maximum performance without compromise.
• GESI GEN2 400cpsi Catalytic Converters: The latest GEN2 series from GESI is rated to support up to 1000hp while offering smoother exhaust flow and improved efficiency compared with factory units. Featuring advanced emissions technology for optimal catalyst function at high flow rates. A strong choice for those seeking significant performance gains with refined operation.
• OEM-Style Heat Shielding: Redstar's signature thermal management system reduces radiant exhaust heat by up to 80%. Developed with motorsport-inspired materials and construction, it uses a multi-layer design of ceramic insulation and embossed stainless steel foil. Unlike wraps or coatings that degrade quickly, Redstar shielding delivers long-term durability and consistent protection for engine bay components.

Key Performance Benefits

• Noticeable power and torque gains
• Faster turbo spool and sharper throttle response
• Lower under-bonnet temperatures when equipped with Redstar heat shielding
• Deeper, more engaging exhaust tone
• Straightforward installation with an OEM-like fit
• Supports turbocharger longevity through reduced exhaust restriction and heat

Technical Specifications

• 2 mm wall T304L stainless steel construction
• 3 in tubing with smooth transition to OEM-spec bottom flanges
• OEM X-crossing design
• Designed to fit OEM mid-pipes
• No O2 wire extensions needed
• LHD and RHD compliant

Fitments

• 2012-2019 Audi S6/RS6 Quattro C7 C7.5 4.0T
• 2012-2019 Audi S7/RS7 Quattro C7 C7.5 4.0T
• 2013-2019 Audi A8/S8 Quattro D4 D4.5 4.0T