Transform your Mercedes E63 / E63S AMG W212 S212 and CLS63 / CLS63S AMG C218 X218 W218 with Redstar performance exhaust downpipes engineered specifically for the M157 5.5 twin-turbo V8. Designed as a direct bolt-on replacement for the factory downpipes, this system unlocks the signature Redstar sound while preserving OEM fit and integration.

By reducing backpressure and improving exhaust flow, these downpipes sharpen throttle response and help the turbos spool faster, delivering a noticeable increase in real-world performance. Optional HJS 200cpsi and GESI GEN2 400cpsi high-performance catalytic converters are available, along with Redstar's OEM-style heat shielding that cuts radiant heat by up to 80% to help control under-bonnet temperatures. The result is a more responsive powertrain, a richer exhaust tone, and enhanced thermal management that supports turbo longevity.

Built for durability, each Redstar downpipe uses 3 inch 304 stainless steel with a robust 2.0mm wall, is 100% TIG welded and back purged, and utilises OEM-spec flanges with factory brackets and mounts. Redstar craftsmanship ensures a precise, repeatable fit and the performance edge enthusiasts expect from a premium performance exhaust upgrade.

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 reduced exhaust backpressure
• Faster turbo spool and crisper throttle response
• Lower under-bonnet temperatures for improved thermal control
• Richer, more engaging exhaust tone
• True bolt-on installation that integrates with factory mounting points
• Supports turbocharger longevity by reducing heat and load

Technical Specifications

• 3 inch 304 stainless steel tubing with 2.0mm wall thickness
• 100% TIG welded and back purged for strength and clean internal joints
• OEM-spec flanges for correct sealing and alignment
• All brackets and mounts replicated from the OEM unit for precise fit

Fitments

• 2012-2017 Mercedes E63 / E63S AMG W212 S212 M157 5.5 twin-turbo engine
• 2012-2018 Mercedes CLS63 / CLS63S AMG C218 X218 W218 M157 5.5 twin-turbo engine