Unleash a deeper, more authentic V8 soundtrack and real performance gains on your 2009-2011 Mercedes E500 / E550 W212 Sedan with the Redstar Exhaust Downpipes engineered for the M273 5.5L Naturally Aspirated engine. Replacing the factory downpipe section, this Redstar performance exhaust upgrade is tailored to the M273 platform for precise fit and reliable results.

Designed to increase exhaust flow and reduce restrictions, these downpipes deliver noticeable power improvements and a more engaging exhaust note. Optional high-flow catalytic converter packages are available, including HJS HD 200cpsi or GESI GEN2 400cpsi, to balance performance and refinement. Pair with Redstar's OEM-style heat shielding to cut radiant heat by up to 80% and help keep engine bay temperatures in check.

Built for longevity and consistency, each system uses 3 inch 304 stainless steel with a robust 2.0mm wall, is 100 percent TIG welded and back purged, and features OEM-spec flanges for a true bolt-on installation. Redstar's motorsport-inspired thermal management and meticulous fabrication deliver the ideal blend of durability, precision, and unmistakable Redstar sound for your E500 or E550.

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.

Key Performance Benefits

• Significant power gain
• Helps lower engine bay temperatures
• Adds a richer, more engaging exhaust note
• Direct bolt-on installation

Technical Specifications

• 2.0mm wall, 3 inch 304 stainless steel construction
• 100 percent TIG welded and back purged
• OEM-spec flanges
• Brackets and mounts mirror the OEM unit

Fitments

• 2009-2011 Mercedes E500 / E550 W212 Sedan M273 5.5L Naturally Aspirated engine