Unleash more from your Bentley and Porsche 4.0-litre V8 with Redstar performance exhaust downpipes and Secondary Cat Delete solutions engineered for the OEM split design. Purpose-built for 2025+ Bentley Continental GT|GTC Speed 4.0L V8 Hybrid and Flying Spur Speed 4.0L V8 Hybrid, 2019-2024 Bentley Continental GT Twin-turbocharged 4.0L V8 and 2020-2024 Flying Spur Twin-turbocharged 4.0L V8, plus 2016-2023 Porsche Panamera 971.1/971.2 including GTS and Turbo S E-Hybrid, and 2024+ Porsche Panamera 976 GTS, Turbo E-Hybrid and Turbo S E-Hybrid. Only fits V8 4.0 Hybrid where specified - does not fit W12. Only fits V8 4.0 on non-hybrid Bentleys - does not fit W12.

Flow-optimised geometry replaces the restrictive factory secondary catalysts on Panamera applications and utilises the OEM split design across all fitments to improve exhaust flow, enabling faster turbo spool, crisper throttle response and meaningful power gains. Expect a richer, more purposeful exhaust note and reduced under-bonnet temperatures, with no check engine light issues and a direct bolt-on installation. Add Redstar OEM-style heat shielding to cut radiant heat by up to 80% for enhanced thermal control.

Each Redstar downpipe is crafted from 2.0mm wall 304 stainless steel, TIG welded and back purged, and finished with OEM-spec CNC machined flanges and factory-style brackets for a precise, durable fit. Designed to integrate cleanly with your performance exhaust, Redstar downpipes deliver the brandÕs hallmark blend of reliability, flow efficiency and sound quality across Bentley Continental GT, Flying Spur and Porsche Panamera models.

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.

Key Performance Benefits

• Noticeable power and torque gains from improved exhaust flow
• Faster turbo spool and sharper throttle response
• Reduced under-bonnet temperatures for greater thermal stability
• Richer, more engaging exhaust tone
• Direct bolt-on installation to factory mounting points
• Will not create a check engine light (CEL)
• Helps extend turbocharger life by reducing backpressure

Technical Specifications

• 2.0mm wall 304 stainless steel construction
• TIG welded and back purged throughout for strength and consistency
• OEM-spec CNC machined flanges for precise sealing
• Includes all brackets and mounts as on the OEM unit
• Utilises the OEM split design for exact-fit integration

Fitments

• 2025+ Bentley Continental GT|GTC Speed 4.0L V8 Hybrid
• 2025+ Bentley Flying Spur Speed 4.0L V8 Hybrid
• 2019-2024 Bentley Continental GT Twin-turbocharged 4.0L V8
• 2020-2024 Bentley Flying Spur Twin-turbocharged 4.0L V8
• 2019-2023 Porsche Panamera 971.1/971.2 GTS
• 2016-2023 Porsche Panamera 971.1/971.2
• 2017-2023 Porsche Panamera 971.1/971.2 Turbo S E-Hybrid
• 2024+ Porsche Panamera 976 GTS
• 2024+ Porsche Panamera 976 Turbo E-Hybrid
• 2024+ Porsche Panamera 976 Turbo S E-Hybrid