Unleash performance from your Audi 3.0 TFSI V6 Supercharged platform with Redstar Test Pipes, engineered for the 2010-2016 Audi S4 B8 B8.5, 2009-2017 Audi S5 B8 B8.5, 2012-2018 Audi SQ5 B8, 2013-2018 Audi A6 C7 C7.5, 2012-2018 Audi A7 C7 C7.5, and 2012-2018 Audi A8 D4. These high-flow test pipes replace the restrictive factory catalytic converters to free up exhaust flow and unlock the efficiency potential of the supercharged 3.0 TFSI.

With 2.5in tubing and carefully engineered, flow-optimised transitions to OEM-spec bottom flanges, the Redstar design reduces backpressure and enhances engine breathing. Expect crisper throttle response, measurable power gains, and a richer exhaust character. For superior thermal control, the optional OEM-style Heat Shielding uses a ceramic inner liner and embossed outer foil to cut radiant exhaust heat by up to 80%.

Built for long-term reliability, each assembly is crafted from 2.0mm wall 304L stainless steel, 100% TIG welded and back purged, and finished with double walled ends and precision CNC machined flanges. OEM-style brackets and mounts ensure a true bolt-on fit for both LHD and RHD applications. Backed by a lifetime warranty, this is a Redstar performance exhaust upgrade you can rely on.

Available Options

• 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."
• Competition/Catless: "Maximum flow design for uncompromised performance. Delivers the most aggressive exhaust note and optimal power gains. Track use only - not for road use."

Key Performance Benefits

• Noticeable power and torque gains from reduced exhaust restriction
• Sharper throttle response throughout the rev range
• Lower under-bonnet temperatures for improved thermal stability
• Deeper, more engaging exhaust tone
• Direct bolt-on installation using factory mounting points

Technical Specifications

• 2.5in diameter with flow-optimised smooth transitions to OEM-spec bottom flanges
• Highest quality 2.0mm wall 304L stainless steel construction
• 100% TIG welded and back purged for strength and internal cleanliness
• Double walled pipe ends for added durability
• Precision CNC machined flanges for accurate sealing
• All brackets and mounts mirror the OEM layout
• Fits both LHD and RHD vehicles

Notes

• Lifetime warranty

Fitments

• 2010-2016 Audi S4 B8 B8.5 3.0 TFSI V6 Supercharged
• 2009-2017 Audi S5 B8 B8.5 3.0 TFSI V6 Supercharged
• 2012-2018 Audi SQ5 B8 3.0 TFSI V6 Supercharged
• 2013-2018 Audi A6 C7 C7.5 3.0 TFSI V6 Supercharged
• 2012-2018 Audi A7 C7 C7.5 3.0 TFSI V6 Supercharged
• 2012-2018 Audi A8 D4 3.0 TFSI V6 Supercharged