Transform your McLaren 720S M840T and 765LT M840T with Redstar 3.5 inch performance exhaust downpipes engineered for the 4.0L twin-turbo V8. Replacing the factory downpipe section, this system is designed to free exhaust flow where it matters most for these models, elevating response and overall performance.

With larger 3.5 inch piping and 2.0mm 304 stainless construction, the Redstar design reduces backpressure to sharpen throttle response and accelerate turbo spool. Expect a noticeable step in power delivery and a richer, more engaging exhaust note. Optional OEM-style heat shielding reduces radiant heat by up to 80 percent to lower under-bonnet temperatures and support turbo longevity. Choose HJS HD 200cpsi or GESI GEN2 400cpsi high-flow catalytic converters, or go Competition for maximum track-only performance.

Built for demanding use, every Redstar performance exhaust component prioritises flow, thermal management, and durability. The result is a purposeful upgrade that integrates with your McLaren 720S or 765LT while delivering the sound, response, and performance gains enthusiasts expect from Redstar downpipes.

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

• Faster turbo spool-up and crisper throttle response
• Significant power increase from reduced exhaust backpressure
• Lower under-bonnet temperatures that help protect adjacent components
• Enhanced turbocharger longevity through improved thermal control
• Deeper, more engaging exhaust tone

Technical Specifications

• 3.5 inch piping
• 2.0mm wall 304 stainless steel

Fitments

• 2017-2023 McLaren 720S M840T
• 2020-2023 Mclaren 765LT M840T