Unleash performance in your BMW S68 V8 by fitting Redstar Primary Downpipes, engineered for 2023+ BMW G70 760i xDrive 4.4L V8, 2023+ BMW X5 G05 M60i, X6 G06 M60i, X7 G07 M60i, 2023+ BMW Alpina XB7, 2024+ BMW F95 X5M LCI S68, 2024+ BMW F96 X6M LCI S68, and 2023+ BMW XM / XM Label Red G09 4.4L. These performance exhaust downpipes replace the restrictive primary catalytic converters and integrate as a true bolt-on using factory locations.
By freeing the primary section, Redstar downpipes improve exhaust flow to reduce backpressure, helping the turbos spool faster and sharpening throttle response. Drivers can expect meaningful power and torque gains, a stronger exhaust character, and improved turbocharger longevity through reduced thermal stress. Optional OEM-style heat shielding cuts radiant heat by up to 80% to help control engine bay temperatures.
Each Redstar assembly is crafted from 2.0mm wall 304 stainless steel, 100% TIG welded and back purged, and finished with OEM-spec flanges plus the correct brackets and mounts for a precise fit. This robust, precision-built solution retains OEM serviceability while delivering the flow of a true performance upgrade. Choose from ultra high-performance catalytic options or competition configurations to match your build goals.
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 increases from reduced backpressure
- Quicker turbo spool and crisper throttle response
- Lower engine bay temperatures for improved component protection
- Richer, more engaging exhaust tone
- Simple, true bolt-on fitment using factory points
Technical Specifications
- Constructed from 2.0mm wall 304 stainless steel
- Fully TIG welded and back purged
- OEM-spec flanges
- All brackets and mounts mirror the OEM unit
