Unleash your Bentley and Porsche with Redstar performance exhaust downpipes engineered for top primary placement on twin-turbo 4.0 V8 applications. Precisely matched to 2025+ Bentley Continental GT|GTC Speed 4.0L V8 Hybrid and 2025+ Bentley Flying Spur Speed 4.0L V8 Hybrid, plus 2019-2024 Continental GT and 2020-2024 Flying Spur twin-turbocharged 4.0L V8. Also suits 2019-2023 Porsche Panamera 971.1/971.2 GTS, 2016-2023 Panamera 971.1/971.2, 2017-2023 Panamera 971.1/971.2 Turbo S E-Hybrid, and 2024+ Panamera 976 GTS, 976 Turbo E-Hybrid, 976 Turbo S E-Hybrid. Top Primary downpipe placement only. For Bentley applications, only fits the 4.0 V8 and 4.0 V8 Hybrid - does not fit W12.

By optimising the primary downpipe section, Redstar reduces backpressure for significant power gains, faster turbo spool and crisper throttle response, while delivering a deeper, more engaging exhaust note. Pair with Redstar OEM-style heat shielding to cut radiant heat by up to 80%, lowering under-bonnet temperatures to protect nearby components and help prolong turbocharger life.

Every Redstar system is built for durability and precision integration: 2.0mm wall 304 stainless steel, 100% TIG welded and back purged with OEM-spec CNC machined flanges and factory-style brackets for a true bolt-on install. Choose between HJS HD 200cpsi or GESI GEN2 400cpsi catalytic converter options to meet your performance goals, and add Redstar heat shielding for motorsport-inspired thermal control. Redstar downpipes bring race-grade manufacturing to your road car with reliability you can trust.

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

• Significant power and torque gains from reduced exhaust backpressure
• Faster turbo spool for sharper throttle response
• Noticeably richer and more engaging exhaust note
• Lower under-bonnet temperatures to help protect adjacent components
• Helps extend turbocharger service life
• True bolt-on upgrade that integrates with factory mounting points

Technical Specifications

• Top primary downpipe placement only
• 2.0mm wall 304 stainless steel construction
• 100% TIG welded and back purged
• OEM-spec CNC machined flanges
• Brackets and mounts mirror OEM locations for precise fitment

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