Unleash the voice and response of your Mercedes-AMG with Redstar performance exhaust downpipes engineered for the M177 4.0 twin-turbo V8. Precisely matched to 2016-2023 E63 / E63S 4Matic W213 S213 C238 A238, 2019+ GT63 / GT63S 4Matic 4-door x290, and 2024+ GT63 S E Performance 4-door x290 hybrid, these Redstar downpipes replace the restrictive factory units while retaining full bolt-on compatibility. Choose Competition Race Use Only, GESI GEN2 400cpsi or HJS HD 200cpsi configurations, with the option of integrated OEM-style heat shielding.

Lower backpressure translates to noticeably faster turbo spool and sharper throttle response, with significant power gains and a deeper, more engaging AMG V8 soundtrack including burbles and crackles on the E63 W213. RedstarÕs motorsport-inspired heat shielding reduces radiant exhaust energy by up to 80%, helping control under-bonnet temperatures and supporting turbo longevity during sustained performance driving.

Built for durability and precision fit, every Redstar downpipe uses highest quality 2.0mm wall 304 stainless steel, is 100% TIG welded and back purged, and features OEM-spec flanges with factory-style brackets and mounts. LHD/RHD compliant and designed for seamless installation, this is the performance exhaust upgrade that blends engineering integrity, reliability and unmistakable Redstar 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

• Significant power gains across the rev range
• Faster turbo spool and sharper throttle response
• Reduced under-bonnet temperatures for improved component longevity
• Richer, more engaging AMG exhaust note
• True bolt-on installation for straightforward fitment

Technical Specifications

• Highest quality 2.0mm wall 304 stainless steel construction
• 100% TIG welded and back purged
• OEM-spec flanges
• All brackets and mounts as on OEM unit
• Proper thermocouple bungs
• LHD/RHD compliant

Fitments

• 2016-2023 Mercedes E63 / E63S 4Matic W213 S213 C238 A238 Sedan Station Wagon Coupe Cabriolet Pre-Facelift and Facelift models with M177 4.0 twin-turbo engine
• 2024+ Mercedes GT63 S E Performance 4Matic 4-door x290 with M177 4.0 twin-turbo hybrid engine
• 2019+ Mercedes GT63 / GT63S 4Matic 4-door x290 with M177 4.0 twin-turbo engine