Unleash the potential of your 2025+ Mercedes-AMG G63 SUV W465 with the M177 4.0 twin-turbo hybrid engine using Redstar performance exhaust downpipes. Purpose-built for this application, they provide a direct replacement for the factory downpipes and integrate cleanly with OEM mounting points for a true bolt-on upgrade.

Expect quicker turbo spool, sharper throttle response, and noticeable power gains from the reduced backpressure. Redstar's motorsport-inspired thermal management is available via OEM-style heat shielding with a ceramic inner liner, cutting radiant exhaust heat by up to 80% to help manage under-bonnet temperatures and support turbo longevity. Catalytic options include HJS HD 200cpsi and GESI GEN2 400cpsi to match performance goals.

Engineered for strength and precision, each system is 100% TIG welded and back purged from 2.0mm wall 304 stainless steel and uses OEM-spec flanges for a precise fit. The result is a durable, high-flow downpipe solution that elevates the G63's performance character while delivering the distinctive Redstar sound and quality.

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.
• OPF: For European Emission controlled cars.

Key Performance Benefits

• Significant power and torque gains from improved exhaust flow
• Faster spool-up and crisper throttle response
• Reduced under-bonnet temperatures for improved component protection
• Enhanced, more engaging exhaust tone
• True bolt-on installation for straightforward fitment

Technical Specifications

• 2.0mm wall 304 stainless steel construction
• 100% TIG welded and back purged for strength and integrity
• OEM-spec flanges for precise alignment and sealing
• All brackets and mounts mirror the OEM layout

Fitments

• 2025+ Mercedes-AMG G63 SUV W465 M177 4.0 twin-turbo hybrid engine