Unleash performance and sound across the Audi SQ7, SQ8, RSQ8 and RSQ8 Performance 4M/4M.5 4.0L twin-turbo V8, Bentley Bentayga 4.0L V8, Lamborghini Urus including Performante, S and SE, plus Porsche Cayenne S 4.0 and the 9Y0 Cayenne Turbo family. Redstar performance exhaust downpipes replace the restrictive OEM downpipes immediately after the turbos to transform throttle response and exhaust character. For the Bentayga, this system only fits the V8 4.0 - it does not fit the W12.

Experience quicker turbo spool, sharper throttle response and meaningful power gains thanks to flow improvements throughout the downpipe section. Optimised gas velocity reduces backpressure, amplifies the V8 soundtrack, and helps extend turbocharger life. Optional OEM-style heat shielding cuts radiant heat by up to 80% to lower under-bonnet temperatures for added thermal stability.

Built for longevity and precise fitment, each system is a true bolt-on using factory mounting points. Fabricated from premium 2.0mm wall stainless steel and fully TIG welded with back purging, the Redstar solution delivers robust construction, consistent quality and the unmistakable Redstar sound, backed by motorsport-inspired thermal management.

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.
• 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.
• OPF Tubes: For European emission cars.

Key Performance Benefits

• Noticeable power and torque gains
• Quicker turbo spool and sharper throttle response
• Reduced under-bonnet temperatures
• Deeper, more aggressive exhaust tone
• True bolt-on installation using factory locations
• Helps extend turbocharger service life

Technical Specifications

• 2.0mm wall 304L stainless steel
• 2.0mm wall 304 stainless steel
• 100% TIG welded and back purged
• OEM-spec V-band flanges
• OEM-spec flanges
• All brackets and mounts replicated from OEM units

Fitments

• 2020+ Audi SQ7 4M/4M.5 4.0L twin-turbocharged V8
• 2019+ Audi SQ8 4M/4M.5 4.0L twin-turbocharged V8
• 2020+ Audi RSQ8 / RSQ8 Performance 4M/4M.5 4.0L twin-turbocharged V8
• 2019+ Bentley Bentayga 4.0L twin-turbocharged V8
• 2018+ Lamborghini Urus
• 2022-2025 Lamborghini Urus Performante
• 2023-2025 Lamborghini Urus S
• 2025+ Lamborghini Urus SE
• 2024+ Porsche Cayenne S 4.0
• 2018+ Porsche Cayenne Turbo 9YO
• 2019+ Porsche Cayenne Turbo S E-Hybrid 9Y0
• 2019+ Porsche Cayenne Turbo GTS 9Y0
• 2021+ Porsche Cayenne Turbo GT 9Y0