Unleash sharper response and real performance gains in your BMW X3M F97 or X4M F98 with Redstar performance exhaust downpipes tailored for the 3.0 twin turbo S58. Purpose-built for these models, the Redstar downpipes increase exhaust flow where it matters most to deliver a noticeable step up in drivability and power.
A flow-optimised smooth transition design reduces backpressure for faster turbo spool and crisper throttle input, while offering a deeper, more engaging exhaust note. Choose from ultra high-performance 200cpsi HJS HD metal core catalytic converters or GESI GEN2 400cpsi units rated for 1000hp to match your goals. Add Redstar's OEM-style heat shielding option to cut radiant heat by up to 80% for improved thermal control under bonnet.
Crafted from 2.0mm wall 304L stainless steel, every Redstar downpipe is 100% hand made, TIG welded and back purged to ensure strength and consistency. OEM-spec 304SS flanges and factory-style brackets deliver a true bolt-on fit that integrates with existing mounting points. Built with the same attention to detail Redstar applies across its range, this is a high-integrity upgrade for serious X3M and X4M enthusiasts seeking a proven performance exhaust solution.
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
- Noticeable power and torque gains from increased exhaust flow
- Faster turbo spool and sharper throttle response
- Lower under-bonnet temperatures for improved thermal stability
- Richer, more engaging exhaust tone
- Straightforward, bolt-on installation using factory mounting points
Technical Specifications
- 2.0mm wall 304L stainless steel construction
- 100% TIG welded and back purged
- OEM-spec 304SS flanges
- All brackets and mounts as on the OEM unit
- 100% hand made
- LHD and RHD compliant
