Unleash your 2021+ Audi RS3 8Y with the Redstar performance exhaust downpipe, engineered around a 3.5 inch single-tube design to maximise exhaust flow. This system replaces the restrictive factory sections housing both the primary and secondary catalytic converters, clearing the path immediately after the turbo for improved response and output.

The streamlined layout reduces backpressure for faster spool-up, stronger mid-range and top-end performance, and a more engaging exhaust note. Optional OEM-style heat shielding with a ceramic inner layer cuts radiant heat by up to 80 percent, helping to manage under-bonnet temperatures and supporting turbocharger longevity during spirited driving.

Built for reliability as well as speed, every Redstar downpipe is precision TIG welded and back purged from 2.0 mm wall 304 stainless steel, secured with an OEM-spec V-band flange and factory-style brackets for a true bolt-on fit. LHD and RHD compatible and finished to Redstar quality standards, this is the robust, high-flow solution enthusiasts expect from Redstar performance exhaust downpipes.

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

• Significant power gains from greatly improved exhaust flow
• Faster turbo spool-up and noticeably sharper throttle response
• Lower under-bonnet temperatures for greater consistency
• A more assertive and engaging exhaust tone
• Bolt-on installation that integrates with OEM mounting points
• Helps support long-term turbocharger longevity

Technical Specifications

• 3.5 inch single-tube design for high flow
• Constructed from 2.0 mm wall 304 stainless steel
• TIG welded and back purged for strength and internal cleanliness
• OEM-spec V-band flange
• Brackets and mounts match OEM layout

Notes

• LHD/RHD compliant
• Lifetime warranty

Fitments

• 2021+ Audi RS3 8Y