Unlock more power with RedStar Exhaust Test Pipes for Audi 3.0 TFSI supercharged engines. These 2.5" high-flow test pipes replace restrictive catalytic converters to improve exhaust flow, throttle response, and overall performance. Built from premium materials and engineered for a direct, precise fit, they’re the perfect upgrade to maximize your Audi’s...

REDSTAR EXHAUST Downpipes for the Audi B9 RS5 and F5 RS4 equipped with the Porsche-derived 2.9L engine are engineered for maximum exhaust flow and efficiency. Featuring a large-bore design with smooth, optimized transitions, these downpipes use extended cones to reduce the OEM 127mm turbo outlets to an 89mm main section, followed by a secondary transition...

Upgrade your Audi C7 4.0T with REDSTAR Performance Downpipes, engineered for S6, S7, RS6, RS7, and D4 A8/S8 models equipped with the 4.0T TFSI engine. Featuring an OEM-style X-crossing design and OEM-spec lower flanges, these downpipes ensure precise fitment and straightforward installation. Optimized to improve exhaust flow, they deliver increased...

Introducing REDSTAR EXHAUST Stelvio Downpipes, engineered specifically for the Quadrifoglio model with the powerful 2.9 F154 Twin Turbo V6 Engine. These high-performance downpipes enhance exhaust flow, increase horsepower, and deliver a deeper, more aggressive sound. Perfectly crafted for enthusiasts looking to unleash the full potential of their Stelvio...

Unlock the full potential of your turbocharged NSX supercar with Redstar Heat Shielded Downpipes. Designed for performance, our downpipes significantly reduce turbo lag and improve spool-up time, delivering faster response and increased horsepower. Maximize exhaust flow, eliminate excessive backpressure, and experience a smoother, more powerful driving...