Unleash your Mercedes with Redstar performance exhaust downpipes engineered specifically for the C43 W206 2.0L M139, C63 S E Performance 2.0L M139L, GLC43 X254/C254 2.0L M139, and GLC63 S E Performance 2.0L M139L. These precision-fit replacements for the factory downpipes optimise flow on both M139 and hybrid M139L drivetrains, sharpening response and enriching the exhaust character across saloon and SUV platforms.

Developed using CAD-led design, flow bench validation and motorsport-inspired manufacturing techniques, the high-flow architecture reduces backpressure to promote faster turbo spool, crisper throttle modulation and stronger power delivery. Specify Redstar's OEM-style heat shielding to cut radiant temperatures by up to 80% for improved thermal management in the engine bay. Built from robust 2.0mm wall 304 stainless steel, these downpipes are made to perform and endure.

A true bolt-on upgrade for LHD and RHD vehicles, Redstar downpipes integrate cleanly with OEM mounting points. Available with HJS 200cpsi or GESI GEN2 400cpsi catalytic converters and OEM-style heat shielding, this Redstar downpipe solution elevates performance, sound and driving engagement while reflecting the brand's focus on precision engineering and long-term reliability.

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 - European emission cars only.

Key Performance Benefits

• Noticeable power and torque gains from improved exhaust flow
• Faster turbo spool with sharper throttle response
• Lower under-bonnet temperatures that help protect nearby components
• Enhanced, more aggressive exhaust tone
• Increased turbocharger longevity due to reduced backpressure and heat
• Hassle-free installation that integrates with factory systems

Technical Specifications

• Highest quality 2.0mm wall 304 stainless steel construction
• Direct bolt-on design with proper facelift brackets
• LHD and RHD compliant fitment

Fitments

• 2023+ Mercedes C43 W206 2.0L M139
• 2024+ Mercedes C63 S E Performance 2.0L M139L
• 2023+ Mercedes GLC43 X254/C254 2.0L M139
• 2024+ Mercedes GLC63 S E Performance 2.0L M139L