Unleash the potential of your BMW G90 M5 and G99 M5 Touring with Redstar Exhaust Primary Downpipes for the S68 V8. These performance exhaust downpipes replace the factory primary downpipe section to reduce restriction and let the S68 breathe as intended, making them an ideal upgrade for owners looking to elevate power and response while keeping full compatibility with OEM components.

By improving exhaust flow and lowering backpressure, the Redstar downpipes deliver faster turbo spool and noticeably sharper throttle response, alongside meaningful gains in power and torque. The result is a more engaging, assertive exhaust character that enhances the M5 driving experience without compromise. For drivers prioritising thermal control, Redstar's OEM-style heat shielding option further manages radiant heat in the engine bay.

Engineered for durability and precision, each set is 100% bolt-on and built from highest quality 2.0mm wall 304 stainless steel, TIG welded and back purged with OEM-spec flanges and factory-style brackets. Designed to integrate cleanly with your BMW, Redstar downpipes combine robust construction with performance-focused design. Keywords: BMW G90 M5, BMW G99 M5 Touring, S68 V8, performance exhaust, downpipes, Redstar.

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.
• 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
• Faster turbo spool and sharper throttle response
• Reduced under-bonnet temperatures to help protect components and extend turbo life
• More assertive and engaging exhaust tone
• True bolt-on installation using factory mounting points

Technical Specifications

• Highest quality 2.0mm wall 304 stainless steel
• 100% TIG welded and back purged
• OEM-spec flanges for precise sealing and alignment
• All brackets and mounts mirror the OEM unit

Fitments

• 2025+ G90 M5
• 2025+ G99 M5 Touring