Transform your 2017-2024 Mercedes-AMG G63 SUV W463A with Redstar performance exhaust downpipes for the M177 4.0 twin-turbo engine. Designed to replace the factory downpipe section, this system focuses on reducing backpressure and unlocking tangible gains in response and drivability.

For drivers seeking stronger performance with thermal control, Redstar offers optional OEM-style heat shielding that can reduce radiant exhaust heat by up to 80%, inspired by motorsport-grade thermal practices. Optional high-flow catalytic converter packages allow you to tailor flow and sound to your preference while maintaining seamless integration with OEM mounting.

Crafted for durability and precision, the assembly uses 2.0mm wall 304 stainless steel with 100% TIG-welded and back-purged construction. OEM-spec flanges and factory-style brackets complete a true bolt-on upgrade that delivers the hallmark Redstar blend of performance, quality, and sound.

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 gains
• Quicker turbo spool-up and sharper throttle response
• Reduced under-bonnet temperatures for consistent performance
• Support for turbocharger longevity
• Enhanced exhaust note with a more engaging character
• Straightforward bolt-on installation

Technical Specifications

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

Notes

• EURO 5/6 Compliant

Fitments

• 2017-2024 Mercedes-AMG G63 SUV W463A M177 4.0 twin-turbo engine