Unleash performance in your Mercedes with the Redstar GEN 2 Downpipe engineered for models running the M256 3.0L in-line turbo, including G500/G550, CLE450/CLE53, E450/E53e Hybrid, GLE53/GLE450/GLS450 and key S-Class variants. This performance exhaust upgrade features a big-bore 3.5 inch U-bend that transitions to OEM-spec diameter for maximum flow with seamless system integration, making it a standout choice among high-quality downpipes. GEN 2 provisions support hybrid applications for expanded functionality.
Developed using 3D scanning and reverse engineering, the long 3.5 inch section and flow-optimised transition to 3 inch target reduced backpressure for faster spool, sharper throttle response and tangible power and torque gains, while adding a richer, more engaging exhaust tone. GEN 2 adds extra sensor bungs and thermocouples on hybrid models, a capability not supported by the GEN 1 M256 Downpipe. Optional OEM-style heat shielding reduces radiant exhaust heat by up to 80 percent to help control under-bonnet temperatures.
Built from 2.0 mm wall 304 stainless steel, each Redstar downpipe is 100 percent TIG welded and back purged, and finished with OEM-spec flanges and brackets for a true bolt-on fit. Choose Redstar for precision fitment, optimised flow and lasting durability in your Mercedes performance exhaust.
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 across the rev range
- Faster turbo spool and crisper throttle response
- Reduced under-bonnet temperatures for improved thermal control
- Enhances exhaust character with a deeper, more engaging tone
- Simple, 100 percent bolt-on installation using factory-style mounting points
- Supports turbocharger longevity by lowering exhaust backpressure
Technical Specifications
- Long 3.5 in OD primary section with a smooth transition to 3 in OEM-spec diameter
- Flow-optimised smooth transition design for improved gas velocity
- 2.0 mm wall 304 stainless steel construction
- 100 percent TIG welded and back purged for strength and purity
- OEM-spec flanges with brackets and mounts mirroring the factory unit
- 3D scanned and reverse engineered for precise, repeatable fitment
- GEN 2 includes additional sensor bungs and thermocouple provisions for hybrid models
Notes
- The GEN 1 M256 Downpipe is not compatible with these GEN 2 updates.
