Unleash the performance potential of your BMW E70 X5M and E71 X6M with Redstar performance exhaust downpipes for the S63 4.4-litre V8 bi-turbo. Purpose-built for these M models, the Redstar downpipes integrate with OEM mounting points as a true bolt-on upgrade to the factory locations, delivering a precise fit and dependable sealing.

Expect a significant step forward in drivability with quicker turbo spool, sharper throttle response and a more engaging exhaust tone. Optional OEM-style heat shielding reduces radiant heat by up to 80%, promoting greater thermal stability around the engine bay and supporting long-term turbocharger health.

Engineered for durability and consistency, each system uses 2.0mm wall 304 stainless steel with 100% TIG-welded, back-purged joints and OEM-spec 304SS flanges. All brackets and mounts mirror the OEM unit, ensuring straightforward installation and a robust, long-lasting connection. Redstar downpipes deliver the blend of precision, reliability and sound that performance enthusiasts expect from a premium Redstar performance exhaust upgrade.

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

• Noticeable power and torque gains
• Quicker turbo spool and sharper throttle response
• Helps extend turbocharger life
• Lower under bonnet temperatures
• Richer, more engaging exhaust tone
• Straightforward bolt-on fitment

Technical Specifications

• 2.0mm wall 304 stainless steel construction
• 100% TIG welded and back purged
• OEM-spec 304SS flanges for factory-grade sealing
• All brackets and mounts mirror the OEM unit

Notes

• EURO 6 compliant when configured with HJS HD 200cpsi catalytic converters

Fitments

• 2010-2014 BMW X5M E70 S63 4.4 V8 Bi-Turbo
• 2010-2014 BMW X6M E71 S63 4.4 V8 Bi-Turbo