Unleash the sound and response of your Mercedes-AMG with Redstar performance exhaust downpipes engineered for the GT55 C192 M177 4.0 twin-turbo, GT63 and GT63 Pro C192 M177 4.0 twin-turbo, GT63 S E Performance C192 M177 4.0 twin-turbo hybrid, SL55 R232 M176 4.0 twin-turbo, SL63 R232 M177 4.0 twin-turbo and SL63 S E Performance R232 M177 Hybrid 4.0 twin-turbo. These downpipes install in place of the OEM downpipes for a seamless upgrade that retains factory-style mounting and integration.

Developed using CAD and motorsport-inspired manufacturing methods, Redstar downpipes are validated for smoother flow to reduce back pressure, sharpen throttle response and speed turbo spool. The result is a richer, more aggressive V8 soundtrack with distinct burbles and crackles. When specified with Redstar OEM-style heat shielding, radiant exhaust heat is reduced by up to 80% to help control under-bonnet temperatures and protect surrounding components.

Built for longevity and precision, each system uses 2.0mm wall 304 stainless steel, is 100% TIG welded and back purged, and employs OEM-spec flanges and brackets for exact fitment. As a true bolt-on upgrade that is LHD and RHD compliant, Redstar downpipes deliver the performance exhaust character, response and build quality enthusiasts expect from 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.
• 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 from a freer-flowing exhaust path
• Faster turbo spool and sharper throttle response
• Lower under-bonnet temperatures for improved component protection and turbo longevity
• Deeper, more aggressive V8 soundtrack with distinct burbles and crackles
• Direct bolt-on fitment for straightforward installation with OEM integration

Technical Specifications

• 2.0mm wall 304 stainless steel construction
• 100% TIG welded and back purged joints
• OEM-spec flanges for precise mating to factory systems
• All brackets and mounts mirror the OEM layout
• LHD and RHD compliant design

Disclaimers

Fitments

• 2024+ Mercedes GT55 C192 with M177 4.0 twin-turbo engine
• 2024+ Mercedes GT63 / GT63 Pro C192 M177 4.0 twin-turbo engine
• 2025+ Mercedes GT63 S E Performance C192 M177 4.0 twin-turbo engine
• 2022+ Mercedes SL55 R232 with M176 4.0 twin-turbo engine
• 2022+Mercedes SL580 Maybach
• 2022+ Mercedes SL63 R232 with M177 4.0 twin-turbo engine
• 2022+ Mercedes SL680 Maybach
• 202+ Mercedes SL63 S E Performance R232 with M177 Hybrid 4.0 twin-turbo engine