Transform your Audi RS3 8P or TT RS 8J with the Redstar Exhaust Downpipe for the 2.5 TFSI engine. This optimised single-tube design replaces the factory downpipe and removes both the primary and secondary catalytic converters, unlocking the flow your 2.5 TFSI deserves while retaining a true bolt-on fitment. Perfectly suited to 2011-2012 Audi RS3 8P and 2009-2014 Audi TT RS 8J applications, it is engineered for serious performance exhaust gains.

By reducing backpressure and improving exhaust velocity, this Redstar system delivers a significant power increase, faster turbo spool, and sharper throttle response, while contributing to lower under-bonnet temperatures. The optional OEM-style heat shielding, developed with motorsport-inspired construction, cuts radiant heat by up to 80% for added thermal control and component protection. Expect a richer, more engaging exhaust note without compromising day-to-day drivability.

Built to endure, the downpipe is manufactured from 2.0mm wall 304 stainless steel, 100% TIG welded and back purged, and finished with an OEM-spec V-band flange and factory-style brackets and mounts. LHD and RHD compliant and backed by a lifetime warranty, Redstar downpipes deliver precision engineering, durability, and the unmistakable Redstar sound for RS3 8P and TT RS 8J owners seeking a premium performance exhaust upgrade.

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

• Delivers significant power gains by freeing up exhaust flow
• Faster turbo spool and crisper throttle response
• Helps lower under-bonnet temperatures for improved consistency
• Enhances exhaust tone with a more engaging sound
• True bolt-on installation for straightforward fitment
• Supports turbocharger longevity by reducing backpressure

Technical Specifications

• Optimised single-tube design
• 2.0mm wall 304 stainless steel construction
• 100% TIG welded and back purged
• OEM-spec V-band flange
• Factory-style brackets and mounts as on the OEM unit

Notes

• Eliminates both primary and secondary catalytic converters
• LHD and RHD compliant
• Lifetime warranty

Fitments

• 2011-2012 Audi RS3 8P 2.5TFSI
• 2009-2014 Audi TTRS 8J 2.5TFSI